The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel packages installed that are affected by multiple vulnerabilities:

  - Integer overflow in the aio_setup_single_vector function     in fs/aio.c in the Linux kernel 4.0 allows local users     to cause a denial of service or possibly have     unspecified other impact via a large AIO iovec. NOTE:
    this vulnerability exists because of a CVE-2012-6701     regression. (CVE-2015-8830)

  - A weakness was found in the Linux ASLR implementation.
    Any user able to running 32-bit applications in a x86     machine can disable ASLR by setting the RLIMIT_STACK     resource to unlimited. (CVE-2016-3672)

  - The xc2028_set_config function in     drivers/media/tuners/tuner-xc2028.c in the Linux kernel     before 4.6 allows local users to gain privileges or     cause a denial of service (use-after-free) via vectors     involving omission of the firmware name from a certain     data structure. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out, although we     believe it is unlikely. (CVE-2016-7913)

  - Use-after-free vulnerability in the snd_pcm_info()     function in the ALSA subsystem in the Linux kernel     allows attackers to induce a kernel memory corruption     and possibly crash or lock up a system. Due to the     nature of the flaw, a privilege escalation cannot be     fully ruled out, although we believe it is unlikely.
    (CVE-2017-0861)

  - A reachable assertion failure flaw was found in the     Linux kernel built with KVM virtualisation(CONFIG_KVM)     support with Virtual Function I/O feature (CONFIG_VFIO)     enabled. This failure could occur if a malicious guest     device sent a virtual interrupt (guest IRQ) with a     larger (>1024) index value. (CVE-2017-1000252)

  - Linux kernel Virtualization Module (CONFIG_KVM) for the     Intel processor family (CONFIG_KVM_INTEL) is vulnerable     to a DoS issue. It could occur if a guest was to flood     the I/O port 0x80 with write requests. A guest user     could use this flaw to crash the host kernel resulting     in DoS. (CVE-2017-1000407)

  - A flaw was found in the processing of incoming L2CAP     bluetooth commands. Uninitialized stack variables can be     sent to an attacker leaking data in kernel address     space. (CVE-2017-1000410)

  - A race condition was found in the Linux kernel before     version 4.11-rc1 in 'fs/timerfd.c' file which allows a     local user to cause a kernel list corruption or use-     after-free via simultaneous operations with a file     descriptor which leverage improper 'might_cancel'     queuing. An unprivileged local user could use this flaw     to cause a denial of service of the system. Due to the     nature of the flaw, privilege escalation cannot be fully     ruled out, although we believe it is unlikely.
    (CVE-2017-10661)

  - Linux kernel built with the KVM visualization support     (CONFIG_KVM), with nested visualization (nVMX) feature     enabled (nested=1), is vulnerable to a crash due to     disabled external interrupts. As L2 guest could access     (r/w) hardware CR8 register of the host(L0). In a nested     visualization setup, L2 guest user could use this flaw     to potentially crash the host(L0) resulting in DoS.
    (CVE-2017-12154)

  - It was found that in the Linux kernel through v4.14-rc5,     bio_map_user_iov() and bio_unmap_user() in 'block/bio.c'     do unbalanced pages refcounting if IO vector has small     consecutive buffers belonging to the same page.
    bio_add_pc_page() merges them into one, but the page     reference is never dropped, causing a memory leak and     possible system lockup due to out-of-memory condition.
    (CVE-2017-12190)

  - A flaw was found in the Linux kernel's implementation of     valid_master_desc() in which a memory buffer would be     compared to a userspace value with an incorrect size of     comparison. By bruteforcing the comparison, an attacker     could determine what was in memory after the description     and possibly obtain sensitive information from kernel     memory. (CVE-2017-13305)

  - A use-after-free vulnerability was found in a network     namespaces code affecting the Linux kernel since     v4.0-rc1 through v4.15-rc5. The function     get_net_ns_by_id() does not check for the net::count     value after it has found a peer network in netns_ids idr     which could lead to double free and memory corruption.
    This vulnerability could allow an unprivileged local     user to induce kernel memory corruption on the system,     leading to a crash. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     it is thought to be unlikely. (CVE-2017-15129)

  - A use-after-free vulnerability was found when issuing an     ioctl to a sound device. This could allow a user to     exploit a race condition and create memory corruption or     possibly privilege escalation. (CVE-2017-15265)

  - A flaw was found in the implementation of associative     arrays where the add_key systemcall and KEYCTL_UPDATE     operations allowed for a NULL payload with a nonzero     length. When accessing the payload within this length     parameters value, an unprivileged user could trivially     cause a NULL pointer dereference (kernel oops).
    (CVE-2017-15274)

  - The net/netfilter/nfnetlink_cthelper.c function in the     Linux kernel through 4.14.4 does not require the     CAP_NET_ADMIN capability for new, get, and del     operations. This allows local users to bypass intended     access restrictions because the nfnl_cthelper_list data     structure is shared across all net namespaces.
    (CVE-2017-17448)

  - The __netlink_deliver_tap_skb function in     net/netlink/af_netlink.c in the Linux kernel, through     4.14.4, does not restrict observations of Netlink     messages to a single net namespace, when CONFIG_NLMON is     enabled. This allows local users to obtain sensitive     information by leveraging the CAP_NET_ADMIN capability     to sniff an nlmon interface for all Netlink activity on     the system. (CVE-2017-17449)

  - The usb_destroy_configuration() function, in     'drivers/usb/core/config.c' in the USB core subsystem,     in the Linux kernel through 4.14.5 does not consider the     maximum number of configurations and interfaces before     attempting to release resources. This allows local users     to cause a denial of service, due to out-of-bounds write     access, or possibly have unspecified other impact via a     crafted USB device. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     we believe it is unlikely. (CVE-2017-17558)

  - The Salsa20 encryption algorithm in the Linux kernel,     before 4.14.8, does not correctly handle zero-length     inputs. This allows a local attacker the ability to use     the AF_ALG-based skcipher interface to cause a denial of     service (uninitialized-memory free and kernel crash) or     have an unspecified other impact by executing a crafted     sequence of system calls that use the blkcipher_walk     API. Both the generic implementation     (crypto/salsa20_generic.c) and x86 implementation     (arch/x86/crypto/salsa20_glue.c) of Salsa20 are     vulnerable. (CVE-2017-17805)

  - The tcpmss_mangle_packet function in     net/netfilter/xt_TCPMSS.c in the Linux kernel before     4.11, and 4.9.x before 4.9.36, allows remote attackers     to cause a denial of service (use-after-free and memory     corruption) or possibly have unspecified other impact by     leveraging the presence of xt_TCPMSS in an iptables     action. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out, although we     believe it is unlikely. (CVE-2017-18017)

  - The Linux kernel, before version 4.14.3, is vulnerable     to a denial of service in     drivers/md/dm.c:dm_get_from_kobject() which can be     caused by local users leveraging a race condition with
    __dm_destroy() during creation and removal of DM     devices. Only privileged local users (with CAP_SYS_ADMIN     capability) can directly perform the ioctl operations     for dm device creation and removal and this would     typically be outside the direct control of the     unprivileged attacker. (CVE-2017-18203)

  - The madvise_willneed function in the Linux kernel allows     local users to cause a denial of service (infinite loop)     by triggering use of MADVISE_WILLNEED for a DAX mapping.
    (CVE-2017-18208)

  - A flaw was found where the kernel truncated the value     used to indicate the size of a buffer which it would     later become zero using an untruncated value. This can     corrupt memory outside of the original allocation.
    (CVE-2017-9725)

  - In the Linux kernel versions 4.12, 3.10, 2.6, and     possibly earlier, a race condition vulnerability exists     in the sound system allowing for a potential deadlock     and memory corruption due to use-after-free condition     and thus denial of service. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely. (CVE-2018-1000004)

  - Improper validation in the bnx2x network card driver of     the Linux kernel version 4.15 can allow for denial of     service (DoS) attacks via a packet with a gso_size     larger than ~9700 bytes. Untrusted guest VMs can exploit     this vulnerability in the host machine, causing a crash     in the network card. (CVE-2018-1000026)

  - By mmap()ing a FUSE-backed file onto a process's memory     containing command line arguments (or environment     strings), an attacker can cause utilities from psutils     or procps (such as ps, w) or any other program which     makes a read() call to the /proc//cmdline (or     /proc//environ) files to block indefinitely (denial     of service) or for some controlled time (as a     synchronization primitive for other attacks).
    (CVE-2018-1120)

  - A null pointer dereference in dccp_write_xmit() function     in net/dccp/output.c in the Linux kernel allows a local     user to cause a denial of service by a number of certain     crafted system calls. (CVE-2018-1130)

  - An issue was discovered in the proc_pid_stack function     in fs/proc/base.c in the Linux kernel. An attacker with     a local account can trick the stack unwinder code to     leak stack contents to userspace. The fix allows only     root to inspect the kernel stack of an arbitrary task.
    (CVE-2018-17972)

  - A flaw was found in the Linux kernel with files on tmpfs     and hugetlbfs. An attacker is able to bypass file     permissions on filesystems mounted with tmpfs/hugetlbs     to modify a file and possibly disrupt normal system     behavior. At this time there is an understanding there     is no crash or privilege escalation but the impact of     modifications on these filesystems of files in     production systems may have adverse affects.
    (CVE-2018-18397)

  - In the Linux kernel before 4.17, a local attacker able     to set attributes on an xfs filesystem could make this     filesystem non-operational until the next mount by     triggering an unchecked error condition during an xfs     attribute change, because xfs_attr_shortform_addname in     fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE     operations with conversion of an attr from short to long     form. (CVE-2018-18690)

  - Modern operating systems implement virtualization of     physical memory to efficiently use available system     resources and provide inter-domain protection through     access control and isolation. The L1TF issue was found     in the way the x86 microprocessor designs have     implemented speculative execution of instructions (a     commonly used performance optimization) in combination     with handling of page-faults caused by terminated     virtual to physical address resolving process. As a     result, an unprivileged attacker could use this flaw to     read privileged memory of the kernel or other processes     and/or cross guest/host boundaries to read host memory     by conducting targeted cache side-channel attacks.
    (CVE-2018-3646)

  - A flaw was found in the Linux kernel's handling of     loopback devices. An attacker, who has permissions to     setup loopback disks, may create a denial of service or     other unspecified actions. (CVE-2018-5344)

  - The acpi_smbus_hc_add function in drivers/acpi/sbshc.c     in the Linux kernel, through 4.14.15, allows local users     to obtain sensitive address information by reading dmesg     data from an SBS HC printk call. (CVE-2018-5750)

  - An error in the _sctp_make_chunk() function     (net/sctp/sm_make_chunk.c) when handling SCTP, packet     length can be exploited by a malicious local user to     cause a kernel crash and a DoS. (CVE-2018-5803)

  - In the function wmi_set_ie() in the Linux kernel the     length validation code does not handle unsigned integer     overflow properly. As a result, a large value of the     ie_len argument can cause a buffer overflow and thus a     memory corruption leading to a system crash or other or     unspecified impact. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     we believe it is unlikely. (CVE-2018-5848)

  - ALSA sequencer core initializes the event pool on demand     by invoking snd_seq_pool_init() when the first write     happens and the pool is empty. A user can reset the pool     size manually via ioctl concurrently, and this may lead     to UAF or out-of-bound access. (CVE-2018-7566)

  - A possible memory corruption due to a type confusion was     found in the Linux kernel in the sk_clone_lock()     function in the net/core/sock.c. The possibility of     local escalation of privileges cannot be fully ruled out     for a local unprivileged attacker. (CVE-2018-9568)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel-rt packages installed that are affected by multiple vulnerabilities:

  - Integer overflow in the aio_setup_single_vector function     in fs/aio.c in the Linux kernel 4.0 allows local users     to cause a denial of service or possibly have     unspecified other impact via a large AIO iovec. NOTE:
    this vulnerability exists because of a CVE-2012-6701     regression. (CVE-2015-8830)

  - A weakness was found in the Linux ASLR implementation.
    Any user able to running 32-bit applications in a x86     machine can disable ASLR by setting the RLIMIT_STACK     resource to unlimited. (CVE-2016-3672)

  - The xc2028_set_config function in     drivers/media/tuners/tuner-xc2028.c in the Linux kernel     before 4.6 allows local users to gain privileges or     cause a denial of service (use-after-free) via vectors     involving omission of the firmware name from a certain     data structure. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out, although we     believe it is unlikely. (CVE-2016-7913)

  - Use-after-free vulnerability in the snd_pcm_info()     function in the ALSA subsystem in the Linux kernel     allows attackers to induce a kernel memory corruption     and possibly crash or lock up a system. Due to the     nature of the flaw, a privilege escalation cannot be     fully ruled out, although we believe it is unlikely.
    (CVE-2017-0861)

  - A reachable assertion failure flaw was found in the     Linux kernel built with KVM virtualisation(CONFIG_KVM)     support with Virtual Function I/O feature (CONFIG_VFIO)     enabled. This failure could occur if a malicious guest     device sent a virtual interrupt (guest IRQ) with a     larger (>1024) index value. (CVE-2017-1000252)

  - Linux kernel Virtualization Module (CONFIG_KVM) for the     Intel processor family (CONFIG_KVM_INTEL) is vulnerable     to a DoS issue. It could occur if a guest was to flood     the I/O port 0x80 with write requests. A guest user     could use this flaw to crash the host kernel resulting     in DoS. (CVE-2017-1000407)

  - A flaw was found in the processing of incoming L2CAP     bluetooth commands. Uninitialized stack variables can be     sent to an attacker leaking data in kernel address     space. (CVE-2017-1000410)

  - A race condition was found in the Linux kernel before     version 4.11-rc1 in 'fs/timerfd.c' file which allows a     local user to cause a kernel list corruption or use-     after-free via simultaneous operations with a file     descriptor which leverage improper 'might_cancel'     queuing. An unprivileged local user could use this flaw     to cause a denial of service of the system. Due to the     nature of the flaw, privilege escalation cannot be fully     ruled out, although we believe it is unlikely.
    (CVE-2017-10661)

  - Linux kernel built with the KVM visualization support     (CONFIG_KVM), with nested visualization (nVMX) feature     enabled (nested=1), is vulnerable to a crash due to     disabled external interrupts. As L2 guest could access     (r/w) hardware CR8 register of the host(L0). In a nested     visualization setup, L2 guest user could use this flaw     to potentially crash the host(L0) resulting in DoS.
    (CVE-2017-12154)

  - It was found that in the Linux kernel through v4.14-rc5,     bio_map_user_iov() and bio_unmap_user() in 'block/bio.c'     do unbalanced pages refcounting if IO vector has small     consecutive buffers belonging to the same page.
    bio_add_pc_page() merges them into one, but the page     reference is never dropped, causing a memory leak and     possible system lockup due to out-of-memory condition.
    (CVE-2017-12190)

  - A flaw was found in the Linux kernel's implementation of     valid_master_desc() in which a memory buffer would be     compared to a userspace value with an incorrect size of     comparison. By bruteforcing the comparison, an attacker     could determine what was in memory after the description     and possibly obtain sensitive information from kernel     memory. (CVE-2017-13305)

  - A use-after-free vulnerability was found in a network     namespaces code affecting the Linux kernel since     v4.0-rc1 through v4.15-rc5. The function     get_net_ns_by_id() does not check for the net::count     value after it has found a peer network in netns_ids idr     which could lead to double free and memory corruption.
    This vulnerability could allow an unprivileged local     user to induce kernel memory corruption on the system,     leading to a crash. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     it is thought to be unlikely. (CVE-2017-15129)

  - A use-after-free vulnerability was found when issuing an     ioctl to a sound device. This could allow a user to     exploit a race condition and create memory corruption or     possibly privilege escalation. (CVE-2017-15265)

  - A flaw was found in the implementation of associative     arrays where the add_key systemcall and KEYCTL_UPDATE     operations allowed for a NULL payload with a nonzero     length. When accessing the payload within this length     parameters value, an unprivileged user could trivially     cause a NULL pointer dereference (kernel oops).
    (CVE-2017-15274)

  - The net/netfilter/nfnetlink_cthelper.c function in the     Linux kernel through 4.14.4 does not require the     CAP_NET_ADMIN capability for new, get, and del     operations. This allows local users to bypass intended     access restrictions because the nfnl_cthelper_list data     structure is shared across all net namespaces.
    (CVE-2017-17448)

  - The __netlink_deliver_tap_skb function in     net/netlink/af_netlink.c in the Linux kernel, through     4.14.4, does not restrict observations of Netlink     messages to a single net namespace, when CONFIG_NLMON is     enabled. This allows local users to obtain sensitive     information by leveraging the CAP_NET_ADMIN capability     to sniff an nlmon interface for all Netlink activity on     the system. (CVE-2017-17449)

  - The usb_destroy_configuration() function, in     'drivers/usb/core/config.c' in the USB core subsystem,     in the Linux kernel through 4.14.5 does not consider the     maximum number of configurations and interfaces before     attempting to release resources. This allows local users     to cause a denial of service, due to out-of-bounds write     access, or possibly have unspecified other impact via a     crafted USB device. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     we believe it is unlikely. (CVE-2017-17558)

  - The Salsa20 encryption algorithm in the Linux kernel,     before 4.14.8, does not correctly handle zero-length     inputs. This allows a local attacker the ability to use     the AF_ALG-based skcipher interface to cause a denial of     service (uninitialized-memory free and kernel crash) or     have an unspecified other impact by executing a crafted     sequence of system calls that use the blkcipher_walk     API. Both the generic implementation     (crypto/salsa20_generic.c) and x86 implementation     (arch/x86/crypto/salsa20_glue.c) of Salsa20 are     vulnerable. (CVE-2017-17805)

  - The tcpmss_mangle_packet function in     net/netfilter/xt_TCPMSS.c in the Linux kernel before     4.11, and 4.9.x before 4.9.36, allows remote attackers     to cause a denial of service (use-after-free and memory     corruption) or possibly have unspecified other impact by     leveraging the presence of xt_TCPMSS in an iptables     action. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out, although we     believe it is unlikely. (CVE-2017-18017)

  - The Linux kernel, before version 4.14.3, is vulnerable     to a denial of service in     drivers/md/dm.c:dm_get_from_kobject() which can be     caused by local users leveraging a race condition with
    __dm_destroy() during creation and removal of DM     devices. Only privileged local users (with CAP_SYS_ADMIN     capability) can directly perform the ioctl operations     for dm device creation and removal and this would     typically be outside the direct control of the     unprivileged attacker. (CVE-2017-18203)

  - The madvise_willneed function in the Linux kernel allows     local users to cause a denial of service (infinite loop)     by triggering use of MADVISE_WILLNEED for a DAX mapping.
    (CVE-2017-18208)

  - A flaw was found where the kernel truncated the value     used to indicate the size of a buffer which it would     later become zero using an untruncated value. This can     corrupt memory outside of the original allocation.
    (CVE-2017-9725)

  - In the Linux kernel versions 4.12, 3.10, 2.6, and     possibly earlier, a race condition vulnerability exists     in the sound system allowing for a potential deadlock     and memory corruption due to use-after-free condition     and thus denial of service. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely. (CVE-2018-1000004)

  - Improper validation in the bnx2x network card driver of     the Linux kernel version 4.15 can allow for denial of     service (DoS) attacks via a packet with a gso_size     larger than ~9700 bytes. Untrusted guest VMs can exploit     this vulnerability in the host machine, causing a crash     in the network card. (CVE-2018-1000026)

  - By mmap()ing a FUSE-backed file onto a process's memory     containing command line arguments (or environment     strings), an attacker can cause utilities from psutils     or procps (such as ps, w) or any other program which     makes a read() call to the /proc//cmdline (or     /proc//environ) files to block indefinitely (denial     of service) or for some controlled time (as a     synchronization primitive for other attacks).
    (CVE-2018-1120)

  - A null pointer dereference in dccp_write_xmit() function     in net/dccp/output.c in the Linux kernel allows a local     user to cause a denial of service by a number of certain     crafted system calls. (CVE-2018-1130)

  - An issue was discovered in the proc_pid_stack function     in fs/proc/base.c in the Linux kernel. An attacker with     a local account can trick the stack unwinder code to     leak stack contents to userspace. The fix allows only     root to inspect the kernel stack of an arbitrary task.
    (CVE-2018-17972)

  - A flaw was found in the Linux kernel with files on tmpfs     and hugetlbfs. An attacker is able to bypass file     permissions on filesystems mounted with tmpfs/hugetlbs     to modify a file and possibly disrupt normal system     behavior. At this time there is an understanding there     is no crash or privilege escalation but the impact of     modifications on these filesystems of files in     production systems may have adverse affects.
    (CVE-2018-18397)

  - In the Linux kernel before 4.17, a local attacker able     to set attributes on an xfs filesystem could make this     filesystem non-operational until the next mount by     triggering an unchecked error condition during an xfs     attribute change, because xfs_attr_shortform_addname in     fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE     operations with conversion of an attr from short to long     form. (CVE-2018-18690)

  - A flaw was found in the Linux kernel's handling of     loopback devices. An attacker, who has permissions to     setup loopback disks, may create a denial of service or     other unspecified actions. (CVE-2018-5344)

  - The acpi_smbus_hc_add function in drivers/acpi/sbshc.c     in the Linux kernel, through 4.14.15, allows local users     to obtain sensitive address information by reading dmesg     data from an SBS HC printk call. (CVE-2018-5750)

  - An error in the _sctp_make_chunk() function     (net/sctp/sm_make_chunk.c) when handling SCTP, packet     length can be exploited by a malicious local user to     cause a kernel crash and a DoS. (CVE-2018-5803)

  - In the function wmi_set_ie() in the Linux kernel the     length validation code does not handle unsigned integer     overflow properly. As a result, a large value of the     ie_len argument can cause a buffer overflow and thus a     memory corruption leading to a system crash or other or     unspecified impact. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     we believe it is unlikely. (CVE-2018-5848)

  - ALSA sequencer core initializes the event pool on demand     by invoking snd_seq_pool_init() when the first write     happens and the pool is empty. A user can reset the pool     size manually via ioctl concurrently, and this may lead     to UAF or out-of-bound access. (CVE-2018-7566)

  - A possible memory corruption due to a type confusion was     found in the Linux kernel in the sk_clone_lock()     function in the net/core/sock.c. The possibility of     local escalation of privileges cannot be fully ruled out     for a local unprivileged attacker. (CVE-2018-9568)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 12 SP3 kernel for Azure was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-19407: The vcpu_scan_ioapic function in arch/x86/kvm/x86.c allowed local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic was uninitialized (bnc#1116841).

CVE-2018-19985: The function hso_probe read if_num from the USB device (as an u8) and used it without a length check to index an array, resulting in an OOB memory read in hso_probe or hso_get_config_data that could be used by local attackers (bnc#1120743).

CVE-2018-3639: Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4 (bnc#1087082).

CVE-2018-1120: By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which made a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks) (bnc#1093158). </pid></pid>

CVE-2017-16939: The XFRM dump policy implementation in net/xfrm/xfrm_user.c allowed local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages (bnc#1069702).

CVE-2018-16884: NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out (bnc#1119946).

CVE-2018-20169: The USB subsystem mishandled size checks during the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c (bnc#1119714).

CVE-2018-9568: In sk_clone_lock of sock.c, there is a possible memory corruption due to type confusion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation (bnc#1118319).

CVE-2018-16862: A security flaw was found in the way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one (bnc#1117186).

CVE-2018-19824: A local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c (bnc#1118152).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerability :

  - By mmap()ing a FUSE-backed file onto a process's memory     containing command line arguments (or environment     strings), an attacker can cause utilities from psutils     or procps (such as ps, w) or any other program which     makes a read() call to the /proc/<pid>/cmdline (or     /proc/<pid>/environ) files to block indefinitely     (denial of service) or for some controlled time (as a     synchronization primitive for other attacks).

Note that Tenable Network Security has extracted the preceding description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The v4.16.10 update contains important fixes across the tree

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks). (CVE-2018-1120)

Impact

An attacker with local access may be able to cause a Denial of Service (DoS).

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3752-2 advisory.

    USN-3752-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu     16.04 LTS.

    It was discovered that, when attempting to handle an out-of-memory situation, a null pointer dereference     could be triggered in the Linux kernel in some circumstances. A local attacker could use this to cause a     denial of service (system crash). (CVE-2018-1000200)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate     meta-data information. An attacker could use this to construct a malicious xfs image that, when mounted,     could cause a denial of service (system crash). (CVE-2018-10323)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate     xattr information. An attacker could use this to construct a malicious xfs image that, when mounted, could     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10840)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-     data information consistent in some situations. An attacker could use this to construct a malicious ext4     image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881)

    Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle     corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem     that caused a denial of service (system crash) when mounted. (CVE-2018-1093)

    Jann Horn discovered that the Linux kernel's implementation of random seed data reported that it was in a     ready state before it had gathered sufficient entropy. An attacker could use this to expose sensitive     information. (CVE-2018-1108)

    It was discovered that the procfs filesystem did not properly handle processes mapping some memory     elements onto files. A local attacker could use this to block utilities that examine the procfs filesystem     to report operating system state, such as ps(1). (CVE-2018-1120)

    Jann Horn discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep     xattr information consistent in some situations. An attacker could use this to construct a malicious ext4     image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary     code. (CVE-2018-11412)

    Piotr Gabriel Kosinski and Daniel Shapira discovered a stack-based buffer overflow in the CDROM driver     implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2018-11506)

    Shankara Pailoor discovered that a race condition existed in the socket handling code in the Linux kernel.
    A local attacker could use this to cause a denial of service (system crash). (CVE-2018-12232)

    Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer     overflow when handling extended attributes. A local attacker could use this to cause a denial of service     (system crash) or possibly execute arbitrary code. (CVE-2018-12233)

    Felix Wilhelm discovered that the KVM implementation in the Linux kernel did not properly perform     permission checks in some situations when nested virtualization is used. An attacker in a guest VM could     possibly use this to escape into an outer VM or the host OS. (CVE-2018-12904)

    Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an     error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image     that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094)

    It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a     non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405)

    Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an     integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2018-13406)

    Jakub Jirasek discovered that multiple use-after-free errors existed in the USB/IP implementation in the     Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly     execute arbitrary code. (CVE-2018-5814)

    It was discovered that a race condition existed in the ARM Advanced Microcontroller Bus Architecture     (AMBA) driver in the Linux kernel that could result in a double free. A local attacker could use this to     cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-9415)

    It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local     attacker could use this to expose sensitive information (kernel memory). (CVE-2018-1000204)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

New kernel packages are available for Slackware 14.2 to fix security issues.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-3083 advisory.

    - [fs] exec: Limit arg stack to at most 75 of _STK_LIM (Yauheni Kaliuta) [1625991] {CVE-2018-14634}
    - [fs] exec: account for argv/envp pointers (Yauheni Kaliuta) [1625991] {CVE-2018-14634}
    - [cdrom] information leak in cdrom_ioctl_media_changed() (Sanskriti Sharma) [1578207] {CVE-2018-10940}
    - [fs] fs: get_rock_ridge_filename(): handle malformed NM entries (Bill O'Donnell) [1340778]     {CVE-2016-4913}
    - [mm] madvise: fix madvise() infinite loop under special circumstances (Rafael Aquini) [1552982]     {CVE-2017-18208}
    - [kernel] posix-timer: Properly check sigevent->sigev_notify (Phil Auld) [1613711] {CVE-2017-18344}
    - [sound] alsa: rawmidi: Change resized buffers atomically (Denys Vlasenko) [1593087] {CVE-2018-10902}
    - [fs] Fix up non-directory creation in SGID directories (Miklos Szeredi) [1600953] {CVE-2018-13405}
    - [scsi] libsas: fix memory leak in sas_smp_get_phy_events() (Tomas Henzl) [1558582] {CVE-2018-7757}
    - [vhost] fix info leak due to uninitialized memory (Jason Wang) [1573705] {CVE-2018-1118}
    - [net] ip: process in-order fragments efficiently (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] ipv6: defrag: drop non-last frags smaller than min mtu (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] ip: use rb trees for IP frag queue (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] revert ipv4: use skb coalescing in defragmentation (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] modify skb_rbtree_purge to return the truesize of all purged skbs (Sabrina Dubroca) [1613924]     {CVE-2018-5391}
    - [net] ip: discard IPv4 datagrams with overlapping segments (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] speed up skb_rbtree_purge() (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [fs] timerfd: Protect the might cancel mechanism proper (Bill O'Donnell) [1485407] {CVE-2017-10661}
    - [netdrv] bnx2x: disable GSO where gso_size is too big for hardware (Jonathan Toppins) [1546760]     {CVE-2018-1000026}
    - [net] create skb_gso_validate_mac_len() (Jonathan Toppins) [1546760] {CVE-2018-1000026}
    - [fs] aio: properly check iovec sizes (Jeff Moyer) [1337518] {CVE-2015-8830}
    - [fs] ext4: avoid running out of journal credits when appending to an inline file (Lukas Czerner)     [1609759] {CVE-2018-10883}
    - [fs] jbd2: don't mark block as modified if the handle is out of credits (Lukas Czerner) [1609759]     {CVE-2018-10883}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks.(CVE-2018-3639)

By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).(CVE-2018-1120)

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions past bounds check. The flaw relies on the presence of a precisely-defined instruction sequence in the privileged code and the fact that memory writes occur to an address which depends on the untrusted value. Such writes cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to influence speculative execution and/or read privileged memory by conducting targeted cache side-channel attacks.(CVE-2018-3693)

Linux 4.9 has been packaged for Debian 8 as linux-4.9. This provides a supported upgrade path for systems that currently use kernel packages from the 'jessie-backports' suite.

There is no need to upgrade systems using Linux 3.16, as that kernel version will also continue to be supported in the LTS period.

This backport does not include the following binary packages :

hyperv-daemons libcpupower1 libcpupower-dev libusbip-dev linux-compiler-gcc-4.9-x86 linux-cpupower linux-libc-dev usbip

Older versions of most of those are built from other source packages in Debian 8.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2017-5753

Further instances of code that was vulnerable to Spectre variant 1 (bounds-check bypass) have been mitigated.

CVE-2017-18255

It was discovered that the performance events subsystem did not properly validate the value of the kernel.perf_cpu_time_max_percent sysctl. Setting a large value could have an unspecified security impact. However, only a privileged user can set this sysctl.

CVE-2018-1118

The syzbot software found that the vhost driver did not initialise message buffers which would later be read by user processes. A user with access to the /dev/vhost-net device could use this to read sensitive information from the kernel or other users' processes.

CVE-2018-1120

Qualys reported that a user able to mount FUSE filesystems can create a process such that when another process attempting to read its command line will be blocked for an arbitrarily long time. This could be used for denial of service, or to aid in exploiting a race condition in the other program.

CVE-2018-1130

The syzbot software found that the DCCP implementation of sendmsg() does not check the socket state, potentially leading to a NULL pointer dereference. A local user could use this to cause a denial of service (crash). 

CVE-2018-3639

Multiple researchers have discovered that Speculative Store Bypass (SSB), a feature implemented in many processors, could be used to read sensitive information from another context. In particular, code in a software sandbox may be able to read sensitive information from outside the sandbox. This issue is also known as Spectre variant 4.

This update allows the issue to be mitigated on some x86 processors by disabling SSB. This requires an update to the processor's microcode, which is non-free. It may be included in an update to the system BIOS or UEFI firmware, or in a future update to the intel-microcode or amd64-microcode packages.

Disabling SSB can reduce performance significantly, so by default it is only done in tasks that use the seccomp feature. Applications that require this mitigation should request it explicitly through the prctl() system call. Users can control where the mitigation is enabled with the spec_store_bypass_disable kernel parameter.

CVE-2018-5814

Jakub Jirasek reported race conditions in the USB/IP host driver. A malicious client could use this to cause a denial of service (crash or memory corruption), and possibly to execute code, on a USB/IP server.

CVE-2018-10021

A physically present attacker who unplugs a SAS cable can cause a denial of service (memory leak and WARN).

CVE-2018-10087, CVE-2018-10124

zhongjiang found that the wait4() and kill() system call implementations did not check for the invalid pid value of INT_MIN. If a user passed this value, the behaviour of the code was formally undefined and might have had a security impact.

CVE-2018-10853

Andy Lutomirski and Mika Penttil&auml; reported that KVM for x86 processors did not perform a necessary privilege check when emulating certain instructions. This could be used by an unprivileged user in a guest VM to escalate their privileges within the guest.

CVE-2018-10876, CVE-2018-10877, CVE-2018-10878, CVE-2018-10879, CVE-2018-10880, CVE-2018-10881, CVE-2018-10882, CVE-2018-10883

Wen Xu at SSLab, Gatech, reported that crafted ext4 filesystem images could trigger a crash or memory corruption. A local user able to mount arbitrary filesystems, or an attacker providing filesystems to be mounted, could use this for denial of service or possibly for privilege escalation.

CVE-2018-10940

Dan Carpenter reported that the optical disc driver (cdrom) does not correctly validate the parameter to the CDROM_MEDIA_CHANGED ioctl. A user with access to a cdrom device could use this to cause a denial of service (crash).

CVE-2018-11506

Piotr Gabriel Kosinski and Daniel Shapira reported that the SCSI optical disc driver (sr) did not allocate a sufficiently large buffer for sense data. A user with access to a SCSI optical disc device that can produce more than 64 bytes of sense data could use this to cause a denial of service (crash or memory corruption), and possibly for privilege escalation.

CVE-2018-12233

Shankara Pailoor reported that a crafted JFS filesystem image could trigger a denial of service (memory corruption). This could possibly also be used for privilege escalation.

CVE-2018-1000204

The syzbot software found that the SCSI generic driver (sg) would in some circumstances allow reading data from uninitialised buffers, which could include sensitive information from the kernel or other tasks. However, only privileged users with the CAP_SYS_ADMIN or CAP_SYS_RAWIO capability were allowed to do this, so this has little or no security impact.

For Debian 8 'Jessie', these problems have been fixed in version 4.9.110-1~deb8u1. This update additionally fixes Debian bugs #860900, #872907, #892057, #896775, #897590, and #898137; and includes many more bug fixes from stable updates 4.9.89-4.9.110 inclusive.

We recommend that you upgrade your linux-4.9 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
127272	NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0070)	Nessus	NewStart CGSL Local Security Checks	8/12/2019	1/14/2021	critical
127281	NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0074)	Nessus	NewStart CGSL Local Security Checks	8/12/2019	1/14/2021	critical
121344	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0148-1) (Spectre)	Nessus	SuSE Local Security Checks	1/24/2019	5/24/2022	high
123226	openSUSE Security Update : the Linux Kernel (openSUSE-2019-536) (Spectre)	Nessus	SuSE Local Security Checks	3/27/2019	6/11/2024	high
111104	Virtuozzo 7 : readykernel-patch (VZA-2018-046)	Nessus	Virtuozzo Local Security Checks	7/16/2018	3/27/2025	medium
120599	Fedora 28 : kernel (2018-8ce90c8b24)	Nessus	Fedora Local Security Checks	1/3/2019	3/21/2025	medium
150194	F5 Networks BIG-IP : Linux kernel vulnerability (K42202505)	Nessus	F5 Networks Local Security Checks	6/3/2021	2/20/2025	medium
112110	Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3752-2)	Nessus	Ubuntu Local Security Checks	8/24/2018	8/27/2024	high
121505	Slackware 14.2 : Slackware 14.2 kernel (SSA:2019-030-01)	Nessus	Slackware Local Security Checks	1/31/2019	6/25/2024	high
118770	Oracle Linux 7 : kernel (ELSA-2018-3083)	Nessus	Oracle Linux Local Security Checks	11/7/2018	10/24/2024	high
110455	Amazon Linux 2 : kernel (ALAS-2018-1038) (Spectre)	Nessus	Amazon Linux Local Security Checks	6/12/2018	9/24/2024	medium
111165	Debian DLA-1423-1 : linux-4.9 new package (Spectre)	Nessus	Debian Local Security Checks	7/20/2018	9/4/2024	high

Detections

Analytics

Plugins Search

critical

critical

high

high

medium

medium

medium

high

high

high

medium

high