According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the Linux kernel where the coredump     implementation does not use locking or other mechanisms     to prevent vma layout or vma flags changes while it     runs. This allows local users to obtain sensitive     information, cause a denial of service (DoS), or     possibly have unspecified other impact by triggering a     race condition with mmget_not_zero or get_task_mm     calls.(CVE-2019-11599)

  - The Siemens R3964 line discipline driver in     drivers/tty/n_r3964.c in the Linux kernel before 5.0.8     has multiple race conditions.(CVE-2019-11486)

  - A race condition in perf_event_open() allows local     attackers to leak sensitive data from setuid programs.
    As no relevant locks (in particular the     cred_guard_mutex) are held during the     ptrace_may_access() call, it is possible for the     specified target task to perform an execve() syscall     with setuid execution before perf_event_alloc()     actually attaches to it, allowing an attacker to bypass     the ptrace_may_access() check and the     perf_event_exit_task(current) call that is performed in     install_exec_creds() during privileged execve()     calls.(CVE-2019-3901)

  - The atyfb_ioctl function in     drivers/video/fbdev/aty/atyfb_base.c in the Linux     kernel through 4.12.10 does not initialize a certain     data structure, which allows local users to obtain     sensitive information from kernel stack memory by     reading locations associated with padding     bytes.(CVE-2017-14156)

  - A flaw was found in the Linux kernel's ext4 filesystem     code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image.(CVE-2018-10876)

  - A flaw was found in the implementation of the 'fill     buffer', a mechanism used by modern CPUs when a     cache-miss is made on L1 CPU cache. If an attacker can     generate a load operation that would create a page     fault, the execution will continue speculatively with     incorrect data from the fill buffer while the data is     fetched from higher level caches. This response time     can be measured to infer data in the fill buffer.
    (CVE-2018-12130)

  - Modern Intel microprocessors implement hardware-level     micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is     split into STA (STore Address) and STD (STore Data)     sub-operations. These sub-operations allow the     processor to hand-off address generation logic into     these sub-operations for optimized writes. Both of     these sub-operations write to a shared distributed     processor structure called the 'processor store     buffer'. As a result, an unprivileged attacker could     use this flaw to read private data resident within the     CPU's processor store buffer. (CVE-2018-12126)

  - Microprocessors use a aEUR~load portaEURtm subcomponent to     perform load operations from memory or IO. During a     load operation, the load port receives data from the     memory or IO subsystem and then provides the data to     the CPU registers and operations in the CPUaEURtms     pipelines. Stale load operations results are stored in     the 'load port' table until overwritten by newer     operations. Certain load-port operations triggered by     an attacker can be used to reveal data about previous     stale requests leaking data back to the attacker via a     timing side-channel. (CVE-2018-12127)

  - Uncacheable memory on some microprocessors utilizing     speculative execution may allow an authenticated user     to potentially enable information disclosure via a side     channel with local access. (CVE-2019-11091)

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

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3469-1 advisory.

  - The make_response function in drivers/block/xen-blkback/blkback.c in the Linux kernel before 4.11.8 allows     guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by     leveraging the copying of uninitialized padding fields in Xen block-interface response structures, aka     XSA-216. (CVE-2017-10911)

  - A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the     Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a     Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in     a NULL pointer dereference and system crash. (CVE-2017-12153)

  - The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that     the CR8-load exiting and CR8-store exiting L0 vmcs02 controls exist in cases where L1 omits the use     TPR shadow vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the     hardware CR8 register. (CVE-2017-12154)

  - The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux     kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated,     which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ     operation. (CVE-2017-12192)

  - An integer overflow in the qla2x00_sysfs_write_optrom_ctl function in drivers/scsi/qla2xxx/qla_attr.c in     the Linux kernel through 4.12.10 allows local users to cause a denial of service (memory corruption and     system crash) by leveraging root access. (CVE-2017-14051)

  - The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does     not initialize a certain data structure, which allows local users to obtain sensitive information from     kernel stack memory by reading locations associated with padding bytes. (CVE-2017-14156)

  - The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify     that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL     pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.
    (CVE-2017-14340)

  - The iscsi_if_rx function in drivers/scsi/scsi_transport_iscsi.c in the Linux kernel through 4.13.2 allows     local users to cause a denial of service (panic) by leveraging incorrect length validation.
    (CVE-2017-14489)

  - The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain     sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl     call for /dev/sg0. (CVE-2017-14991)

  - The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports     the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in     the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU     registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and     arch/x86/kernel/fpu/signal.c. (CVE-2017-15537)

  - The snd_msnd_interrupt function in sound/isa/msnd/msnd_pinnacle.c in the Linux kernel through 4.11.7     allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other     impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a     double fetch vulnerability. (CVE-2017-9984)

  - The snd_msndmidi_input_read function in sound/isa/msnd/msnd_midi.c in the Linux kernel through 4.11.7     allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other     impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a     double fetch vulnerability. (CVE-2017-9985)

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

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3469-2 advisory.

  - The make_response function in drivers/block/xen-blkback/blkback.c in the Linux kernel before 4.11.8 allows     guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by     leveraging the copying of uninitialized padding fields in Xen block-interface response structures, aka     XSA-216. (CVE-2017-10911)

  - A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the     Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a     Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in     a NULL pointer dereference and system crash. (CVE-2017-12153)

  - The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that     the CR8-load exiting and CR8-store exiting L0 vmcs02 controls exist in cases where L1 omits the use     TPR shadow vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the     hardware CR8 register. (CVE-2017-12154)

  - The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux     kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated,     which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ     operation. (CVE-2017-12192)

  - An integer overflow in the qla2x00_sysfs_write_optrom_ctl function in drivers/scsi/qla2xxx/qla_attr.c in     the Linux kernel through 4.12.10 allows local users to cause a denial of service (memory corruption and     system crash) by leveraging root access. (CVE-2017-14051)

  - The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does     not initialize a certain data structure, which allows local users to obtain sensitive information from     kernel stack memory by reading locations associated with padding bytes. (CVE-2017-14156)

  - The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify     that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL     pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.
    (CVE-2017-14340)

  - The iscsi_if_rx function in drivers/scsi/scsi_transport_iscsi.c in the Linux kernel through 4.13.2 allows     local users to cause a denial of service (panic) by leveraging incorrect length validation.
    (CVE-2017-14489)

  - The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain     sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl     call for /dev/sg0. (CVE-2017-14991)

  - The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports     the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in     the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU     registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and     arch/x86/kernel/fpu/signal.c. (CVE-2017-15537)

  - The snd_msnd_interrupt function in sound/isa/msnd/msnd_pinnacle.c in the Linux kernel through 4.11.7     allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other     impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a     double fetch vulnerability. (CVE-2017-9984)

  - The snd_msndmidi_input_read function in sound/isa/msnd/msnd_midi.c in the Linux kernel through 4.11.7     allows local users to cause a denial of service (over-boundary access) or possibly have unspecified other     impact by changing the value of a message queue head pointer between two kernel reads of that value, aka a     double fetch vulnerability. (CVE-2017-9985)

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

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The pagemap_open function in fs/proc/task_mmu.c in the     Linux kernel before 3.19.3, as used in Android 6.0.1     before 2016-03-01, allows local users to obtain     sensitive physical-address information by reading a     pagemap file, aka Android internal bug     25739721.(CVE-2016-0823i1/4%0

  - drivers/hid/hid-steelseries.c in the Human Interface     Device (HID) subsystem in the Linux kernel through     3.11, when CONFIG_HID_STEELSERIES is enabled, allows     physically proximate attackers to cause a denial of     service (heap-based out-of-bounds write) via a crafted     device.(CVE-2013-2891i1/4%0

  - The overlayfs implementation in the Linux kernel     through 4.5.2 does not properly maintain POSIX ACL     xattr data, which allows local users to gain privileges     by leveraging a group-writable setgid     directory.(CVE-2016-1575i1/4%0

  - Integer overflow in the vc4_get_bcl function in     drivers/gpu/drm/vc4/vc4_gem.c in the VideoCore DRM     driver in the Linux kernel before 4.9.7 allows local     users to cause a denial of service or possibly have     unspecified other impact via a crafted size value in a     VC4_SUBMIT_CL ioctl call.(CVE-2017-5576i1/4%0

  - The KVM subsystem in the Linux kernel through 3.12.5     allows local users to gain privileges or cause a denial     of service (system crash) via a VAPIC synchronization     operation involving a page-end     address.(CVE-2013-6368i1/4%0

  - It was found that the code in net/sctp/socket.c in the     Linux kernel through 4.10.1 does not properly restrict     association peel-off operations during certain wait     states, which allows local users to cause a denial of     service (invalid unlock and double free) via a     multithreaded application. This vulnerability was     introduced by CVE-2017-5986 fix (commit     2dcab5984841).(CVE-2017-6353i1/4%0

  - net/netfilter/nf_conntrack_proto_dccp.c in the Linux     kernel through 3.13.6 uses a DCCP header pointer     incorrectly, which allows remote attackers to cause a     denial of service (system crash) or possibly execute     arbitrary code via a DCCP packet that triggers a call     to the (1) dccp_new, (2) dccp_packet, or (3) dccp_error     function.(CVE-2014-2523i1/4%0

  - Race condition vulnerability was found in     drivers/misc/mic/vop/vop_vringh.c in the MIC VOP driver     in the Linux kernel before 4.6.1. MIC VOP driver does     two successive reads from user space to read a variable     length data structure. Local user can obtain sensitive     information from kernel memory or can cause DoS by     corrupting kernel memory if the data structure changes     between the two reads.(CVE-2016-5728i1/4%0

  - An issue was discovered in the btrfs filesystem code in     the Linux kernel. An invalid pointer dereference in     io_ctl_map_page() when mounting and operating a crafted     btrfs image is due to a lack of block group item     validation in check_leaf_item() in     fs/btrfs/tree-checker.c function. This could lead to a     system crash and a denial of service.(CVE-2018-14613i1/4%0

  - A flaw was found in the way the Linux kernel handled GS     segment register base switching when recovering from a     #SS (stack segment) fault on an erroneous return to     user space. A local, unprivileged user could use this     flaw to escalate their privileges on the     system.(CVE-2014-9322i1/4%0

  - The keyring_search_aux function in     security/keys/keyring.c in the Linux kernel allows     local users to cause a denial of service via a     request_key system call for the 'dead' key     type.(CVE-2017-6951i1/4%0

  - A flaw was found in the way the Linux kernel's XFS file     system handled replacing of remote attributes under     certain conditions. A local user with access to XFS     file system mount could potentially use this flaw to     escalate their privileges on the     system.(CVE-2015-0274i1/4%0

  - A memory leak in the kernel_read_file function in     fs/exec.c in the Linux kernel through 4.20.11 allows     attackers to cause a denial of service (memory     consumption) by triggering vfs_read     failures.(CVE-2019-8980i1/4%0

  - A flaw was found in the kernel's implementation of the     Berkeley Packet Filter (BPF). A local attacker could     craft BPF code to crash the system by creating a     situation in which the JIT compiler would fail to     correctly optimize the JIT image on the last pass. This     would lead to the CPU executing instructions that were     not part of the JIT code.(CVE-2015-4700i1/4%0

  - A security flaw was discovered in     nl80211_set_rekey_data() function in the Linux kernel     since v3.1-rc1 through v4.13. This function does not     check whether the required attributes are present in a     netlink request. This request can be issued by a user     with CAP_NET_ADMIN privilege and may result in NULL     dereference and a system crash.(CVE-2017-12153i1/4%0

  - The atyfb_ioctl function in     drivers/video/fbdev/aty/atyfb_base.c in the Linux     kernel through 4.12.10 does not initialize a certain     data structure, which allows local users to obtain     sensitive information from kernel stack memory by     reading locations associated with padding     bytes.(CVE-2017-14156i1/4%0

  - kernel/events/core.c in the performance subsystem in     the Linux kernel before 4.0 mismanages locks during     certain migrations, which allows local users to gain     privileges via a crafted application, aka Android     internal bug 31095224.(CVE-2016-6787i1/4%0

  - The ioresources_init function in kernel/resource.c in     the Linux kernel through 4.7, as used in Android before     2016-08-05 on Nexus 6 and 7 (2013) devices, uses weak     permissions for /proc/iomem, which allows local users     to obtain sensitive information by reading this file,     aka Android internal bug 28814213 and Qualcomm internal     bug CR786116. NOTE: the permissions may be intentional     in most non-Android contexts.(CVE-2015-8944i1/4%0

  - Race condition in the ioctl_file_dedupe_range function     in fs/ioctl.c in the Linux kernel through 4.7 allows     local users to cause a denial of service (heap-based     buffer overflow) or possibly gain privileges by     changing a certain count value, aka a 'double fetch'     vulnerability.(CVE-2016-6516i1/4%0

  - It was found that the timer functionality in the Linux     kernel ALSA subsystem is prone to a race condition     between read and ioctl system call handlers, resulting     in an uninitialized memory disclosure to user space. A     local user could use this flaw to read information     belonging to other users.(CVE-2017-1000380i1/4%0

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

It was discovered that the KVM subsystem in the Linux kernel did not properly keep track of nested levels in guest page tables. A local attacker in a guest VM could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code in the host OS.
(CVE-2017-12188)

It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-1000255)

Bo Zhang discovered that the netlink wireless configuration interface in the Linux kernel did not properly validate attributes when handling certain requests. A local attacker with the CAP_NET_ADMIN could use this to cause a denial of service (system crash). (CVE-2017-12153)

It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service (system crash).
(CVE-2017-12154)

Vitaly Mayatskikh discovered that the SCSI subsystem in the Linux kernel did not properly track reference counts when merging buffers. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2017-12190)

It was discovered that the key management subsystem in the Linux kernel did not properly restrict key reads on negatively instantiated keys. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-12192)

It was discovered that the ATI Radeon framebuffer driver in the Linux kernel did not properly initialize a data structure returned to user space. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-14156)

ChunYu Wang discovered that the iSCSI transport implementation in the Linux kernel did not properly validate data structures. A local attacker could use this to cause a denial of service (system crash).
(CVE-2017-14489)

Alexander Potapenko discovered an information leak in the waitid implementation of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-14954)

It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15265)

Dmitry Vyukov discovered that the Floating Point Unit (fpu) subsystem in the Linux kernel did not properly handle attempts to set reserved bits in a task's extended state (xstate) area. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-15537)

It was discovered that a race condition existed in the packet fanout 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-2017-15649)

Andrey Konovalov discovered a use-after-free vulnerability in the USB serial console driver in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16525)

Andrey Konovalov discovered that the Ultra Wide Band driver in the Linux kernel did not properly check for an error condition. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-16526)

Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16527)

Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel did not properly validate USB audio buffer descriptors. A physically proximate attacker could use this cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16529)

Andrey Konovalov discovered that the USB unattached storage driver in the Linux kernel contained out-of-bounds error when handling alternative settings. A physically proximate attacker could use to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16530)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB interface association descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16531)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB HID descriptors. A physically proximate attacker could use this to cause a denial of service (system crash).
(CVE-2017-16533)

Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate CDC metadata. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16534).

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

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

CVE-2017-7482

Shi Lei discovered that RxRPC Kerberos 5 ticket handling code does not properly verify metadata, leading to information disclosure, denial of service or potentially execution of arbitrary code.

CVE-2017-7542

An integer overflow vulnerability in the ip6_find_1stfragopt() function was found allowing a local attacker with privileges to open raw sockets to cause a denial of service.

CVE-2017-7889

Tommi Rantala and Brad Spengler reported that the mm subsystem does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, allowing a local attacker with access to /dev/mem to obtain sensitive information or potentially execute arbitrary code.

CVE-2017-10661

Dmitry Vyukov of Google reported that the timerfd facility does not properly handle certain concurrent operations on a single file descriptor. This allows a local attacker to cause a denial of service or potentially to execute arbitrary code.

CVE-2017-10911 / XSA-216

Anthony Perard of Citrix discovered an information leak flaw in Xen blkif response handling, allowing a malicious unprivileged guest to obtain sensitive information from the host or other guests.

CVE-2017-11176

It was discovered that the mq_notify() function does not set the sock pointer to NULL upon entry into the retry logic. An attacker can take advantage of this flaw during a userspace close of a Netlink socket to cause a denial of service or potentially cause other impact.

CVE-2017-11600

bo Zhang reported that the xfrm subsystem does not properly validate one of the parameters to a netlink message. Local users with the CAP_NET_ADMIN capability can use this to cause a denial of service or potentially to execute arbitrary code.

CVE-2017-12134 / #866511 / XSA-229

Jan H. Sch&ouml;nherr of Amazon discovered that when Linux is running in a Xen PV domain on an x86 system, it may incorrectly merge block I/O requests. A buggy or malicious guest may trigger this bug in dom0 or a PV driver domain, causing a denial of service or potentially execution of arbitrary code.

This issue can be mitigated by disabling merges on the underlying back-end block devices, e.g.: echo 2 > /sys/block/nvme0n1/queue/nomerges

CVE-2017-12153

bo Zhang reported that the cfg80211 (wifi) subsystem does not properly validate the parameters to a netlink message. Local users with the CAP_NET_ADMIN capability on a system with a wifi device can use this to cause a denial of service.

CVE-2017-12154

Jim Mattson of Google reported that the KVM implementation for Intel x86 processors did not correctly handle certain nested hypervisor configurations. A malicious guest (or nested guest in a suitable L1 hypervisor) could use this for denial of service.

CVE-2017-14106

Andrey Konovalov of Google reported that a specific sequence of operations on a TCP socket could lead to division by zero. A local user could use this for denial of service.

CVE-2017-14140

Otto Ebeling reported that the move_pages() system call permitted users to discover the memory layout of a set-UID process running under their real user-ID. This made it easier for local users to exploit vulnerabilities in programs installed with the set-UID permission bit set.

CVE-2017-14156

'sohu0106' reported an information leak in the atyfb video driver. A local user with access to a framebuffer device handled by this driver could use this to obtain sensitive information.

CVE-2017-14340

Richard Wareing discovered that the XFS implementation allows the creation of files with the 'realtime' flag on a filesystem with no realtime device, which can result in a crash (oops). A local user with access to an XFS filesystem that does not have a realtime device can use this for denial of service.

CVE-2017-14489

ChunYu of Red Hat discovered that the iSCSI subsystem does not properly validate the length of a netlink message, leading to memory corruption. A local user with permission to manage iSCSI devices can use this for denial of service or possibly to execute arbitrary code.

CVE-2017-1000111

Andrey Konovalov of Google reported that a race condition in the raw packet (af_packet) feature. Local users with the CAP_NET_RAW capability can use this to cause a denial of service or possibly to execute arbitrary code.

CVE-2017-1000251 / #875881

Armis Labs discovered that the Bluetooth subsystem does not properly validate L2CAP configuration responses, leading to a stack buffer overflow. This is one of several vulnerabilities dubbed 'Blueborne'. A nearby attacker can use this to cause a denial of service or possibly to execute arbitrary code on a system with Bluetooth enabled.

CVE-2017-1000363

Roee Hay reported that the lp driver does not properly bounds-check passed arguments. This has no security impact in Debian.

CVE-2017-1000365

It was discovered that argument and environment pointers are not properly taken into account by the size restrictions on arguments and environmental strings passed through execve(). A local attacker can take advantage of this flaw in conjunction with other flaws to execute arbitrary code.

CVE-2017-1000380

Alexander Potapenko of Google reported a race condition in the ALSA (sound) timer driver, leading to an information leak. A local user with permission to access sound devices could use this to obtain sensitive information.

For Debian 7 'Wheezy', these problems have been fixed in version 3.2.93-1. This version also includes bug fixes from upstream versions up to and including 3.2.93.

For Debian 8 'Jessie', these problems have been fixed in version 3.16.43-2+deb8u4 or were fixed in an earlier version.

For Debian 9 'Stretch', these problems have been fixed in version 4.9.30-2+deb9u4 or were fixed in an earlier version.

We recommend that you upgrade your linux 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.

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

  - CVE-2017-7518     Andy Lutomirski discovered that KVM is prone to an     incorrect debug exception (#DB) error occurring while     emulating a syscall instruction. A process inside a     guest can take advantage of this flaw for privilege     escalation inside a guest.

  - CVE-2017-7558 (stretch only)     Stefano Brivio of Red Hat discovered that the SCTP     subsystem is prone to a data leak vulnerability due to     an out-of-bounds read flaw, allowing to leak up to 100     uninitialized bytes to userspace.

  - CVE-2017-10661 (jessie only)     Dmitry Vyukov of Google reported that the timerfd     facility does not properly handle certain concurrent     operations on a single file descriptor. This allows a     local attacker to cause a denial of service or     potentially execute arbitrary code.

  - CVE-2017-11600     Bo Zhang reported that the xfrm subsystem does not     properly validate one of the parameters to a netlink     message. Local users with the CAP_NET_ADMIN capability     can use this to cause a denial of service or potentially     to execute arbitrary code.

  - CVE-2017-12134 / #866511 / XSA-229     Jan H. Schoenherr of Amazon discovered that when Linux     is running in a Xen PV domain on an x86 system, it may     incorrectly merge block I/O requests. A buggy or     malicious guest may trigger this bug in dom0 or a PV     driver domain, causing a denial of service or     potentially execution of arbitrary code.

  This issue can be mitigated by disabling merges on the underlying   back-end block devices, e.g.:echo 2 >   /sys/block/nvme0n1/queue/nomerges

  - CVE-2017-12146 (stretch only)     Adrian Salido of Google reported a race condition in     access to the'driver_override' attribute for platform     devices in sysfs. If unprivileged users are permitted to     access this attribute, this might allow them to gain     privileges.

  - CVE-2017-12153     Bo Zhang reported that the cfg80211 (wifi) subsystem     does not properly validate the parameters to a netlink     message. Local users with the CAP_NET_ADMIN capability     (in any user namespace with a wifi device) can use this     to cause a denial of service.

  - CVE-2017-12154     Jim Mattson of Google reported that the KVM     implementation for Intel x86 processors did not     correctly handle certain nested hypervisor     configurations. A malicious guest (or nested guest in a     suitable L1 hypervisor) could use this for denial of     service.

  - CVE-2017-14106     Andrey Konovalov discovered that a user-triggerable     division by zero in the tcp_disconnect() function could     result in local denial of service.

  - CVE-2017-14140     Otto Ebeling reported that the move_pages() system call     performed insufficient validation of the UIDs of the     calling and target processes, resulting in a partial     ASLR bypass. This made it easier for local users to     exploit vulnerabilities in programs installed with the     set-UID permission bit set.

  - CVE-2017-14156     'sohu0106' reported an information leak in the atyfb     video driver. A local user with access to a framebuffer     device handled by this driver could use this to obtain     sensitive information.

  - CVE-2017-14340     Richard Wareing discovered that the XFS implementation     allows the creation of files with the 'realtime' flag on     a filesystem with no realtime device, which can result     in a crash (oops). A local user with access to an XFS     filesystem that does not have a realtime device can use     this for denial of service.

  - CVE-2017-14489     ChunYu Wang of Red Hat discovered that the iSCSI     subsystem does not properly validate the length of a     netlink message, leading to memory corruption. A local     user with permission to manage iSCSI devices can use     this for denial of service or possibly to execute     arbitrary code.

  - CVE-2017-14497 (stretch only)     Benjamin Poirier of SUSE reported that vnet headers are     not properly handled within the tpacket_rcv() function     in the raw packet (af_packet) feature. A local user with     the CAP_NET_RAW capability can take advantage of this     flaw to cause a denial of service (buffer overflow, and     disk and memory corruption) or have other impact.

  - CVE-2017-1000111     Andrey Konovalov of Google reported a race condition in     the raw packet (af_packet) feature. Local users with the     CAP_NET_RAW capability can use this for denial of     service or possibly to execute arbitrary code.

  - CVE-2017-1000112     Andrey Konovalov of Google reported a race condition     flaw in the UDP Fragmentation Offload (UFO) code. A     local user can use this flaw for denial of service or     possibly to execute arbitrary code.

  - CVE-2017-1000251 / #875881     Armis Labs discovered that the Bluetooth subsystem does     not properly validate L2CAP configuration responses,     leading to a stack-based buffer overflow. This is one of     several vulnerabilities dubbed 'Blueborne'. A nearby     attacker can use this to cause a denial of service or     possibly to execute arbitrary code on a system with     Bluetooth enabled.

  - CVE-2017-1000252 (stretch only)     Jan H. Schoenherr of Amazon reported that the KVM     implementation for Intel x86 processors did not     correctly validate interrupt injection requests. A local     user with permission to use KVM could use this for     denial of service.

  - CVE-2017-1000370     The Qualys Research Labs reported that a large argument     or environment list can result in ASLR bypass for 32-bit     PIE binaries.

  - CVE-2017-1000371     The Qualys Research Labs reported that a large argument     or environment list can result in a stack/heap clash for     32-bit PIE binaries.

  - CVE-2017-1000380     Alexander Potapenko of Google reported a race condition     in the ALSA (sound) timer driver, leading to an     information leak. A local user with permission to access     sound devices could use this to obtain sensitive     information.

Debian disables unprivileged user namespaces by default, but if they are enabled (via the kernel.unprivileged_userns_clone sysctl) then CVE-2017-11600, CVE-2017-14497 and CVE-2017-1000111 can be exploited by any local user.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3583-1 advisory.

  - A elevation of privilege vulnerability in the Upstream Linux file system. Product: Android. Versions:
    Android kernel. Android ID: A-36817013. (CVE-2017-0750)

  - Use-after-free vulnerability in the snd_pcm_info function in the ALSA subsystem in the Linux kernel allows     attackers to gain privileges via unspecified vectors. (CVE-2017-0861)

  - The Linux Kernel 2.6.32 and later are affected by a denial of service, by flooding the diagnostic port     0x80 an exception can be triggered leading to a kernel panic. (CVE-2017-1000407)

  - A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the     Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a     Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in     a NULL pointer dereference and system crash. (CVE-2017-12153)

  - The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do     unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page.
    The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a     memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk     is passed through to a virtual machine) due to an out-of-memory condition. (CVE-2017-12190)

  - The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux     kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated,     which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ     operation. (CVE-2017-12192)

  - An integer overflow in the qla2x00_sysfs_write_optrom_ctl function in drivers/scsi/qla2xxx/qla_attr.c in     the Linux kernel through 4.12.10 allows local users to cause a denial of service (memory corruption and     system crash) by leveraging root access. (CVE-2017-14051)

  - The move_pages system call in mm/migrate.c in the Linux kernel before 4.12.9 doesn't check the effective     uid of the target process, enabling a local attacker to learn the memory layout of a setuid executable     despite ASLR. (CVE-2017-14140)

  - The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux kernel through 4.12.10 does     not initialize a certain data structure, which allows local users to obtain sensitive information from     kernel stack memory by reading locations associated with padding bytes. (CVE-2017-14156)

  - The iscsi_if_rx function in drivers/scsi/scsi_transport_iscsi.c in the Linux kernel through 4.13.2 allows     local users to cause a denial of service (panic) by leveraging incorrect length validation.
    (CVE-2017-14489)

  - The tower_probe function in drivers/usb/misc/legousbtower.c in the Linux kernel before 4.8.1 allows local     users (who are physically proximate for inserting a crafted USB device) to gain privileges by leveraging a     write-what-where condition that occurs after a race condition and a NULL pointer dereference.
    (CVE-2017-15102)

  - The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether     the intended netns is used in a peel-off action, which allows local users to cause a denial of service     (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.
    (CVE-2017-15115)

  - security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in     conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL     pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than     CVE-2017-12192. (CVE-2017-15274)

  - The bnep_add_connection function in net/bluetooth/bnep/core.c in the Linux kernel before 3.19 does not     ensure that an l2cap socket is available, which allows local users to gain privileges via a crafted     application. (CVE-2017-15868)

  - The usb_serial_console_disconnect function in drivers/usb/serial/console.c in the Linux kernel before     4.13.8 allows local users to cause a denial of service (use-after-free and system crash) or possibly have     unspecified other impact via a crafted USB device, related to disconnection and failed setup.
    (CVE-2017-16525)

  - net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability     for add_callback and remove_callback operations, which allows local users to bypass intended access     restrictions because the xt_osf_fingers data structure is shared across all net namespaces.
    (CVE-2017-17450)

  - The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the     underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based     hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a     kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing     SHA-3 initialization. (CVE-2017-17806)

  - 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.
    (CVE-2017-18017)

  - The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address     calculated by a certain rounding operation, which allows local users to map page zero, and consequently     bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat     system calls in a privileged context. (CVE-2017-5669)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis     of the data cache. (CVE-2017-5754)

  - The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local     users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open     a raw socket. (CVE-2017-7542)

  - The mm subsystem in the Linux kernel through 3.2 does not properly enforce the CONFIG_STRICT_DEVMEM     protection mechanism, which allows local users to read or write to kernel memory locations in the first     megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file,     related to arch/x86/mm/init.c and drivers/char/mem.c. (CVE-2017-7889)

  - The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to     gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during     the DCCP_LISTEN state. (CVE-2017-8824)

  - In the Linux kernel through 4.14.13, the rds_cmsg_atomic function in net/rds/rdma.c mishandles cases where     page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer     dereference. (CVE-2018-5333)

  - In the Linux kernel through 4.14.13, drivers/block/loop.c mishandles lo_release serialization, which     allows attackers to cause a denial of service (__lock_acquire use-after-free) or possibly have unspecified     other impact. (CVE-2018-5344)

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

ID	Name	Product	Family	Published	Updated	Severity
125515	EulerOS 2.0 SP5 : kernel (EulerOS-SA-2019-1588)	Nessus	Huawei Local Security Checks	5/29/2019	12/5/2022	high
104320	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3469-1)	Nessus	Ubuntu Local Security Checks	11/1/2017	1/9/2024	high
104321	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3469-2)	Nessus	Ubuntu Local Security Checks	11/1/2017	1/9/2024	high
124829	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1506)	Nessus	Huawei Local Security Checks	5/13/2019	5/20/2022	high
104737	Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3487-1)	Nessus	Ubuntu Local Security Checks	11/22/2017	1/12/2023	high
103363	Debian DLA-1099-1 : linux security update (BlueBorne) (Stack Clash)	Nessus	Debian Local Security Checks	9/21/2017	1/11/2021	high
103365	Debian DSA-3981-1 : linux - security update (BlueBorne) (Stack Clash)	Nessus	Debian Local Security Checks	9/21/2017	1/4/2021	high
107003	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3583-1)	Nessus	Ubuntu Local Security Checks	2/26/2018	1/9/2024	critical

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