The compat_get_timex function in kernel/compat.c in the Linux kernel before 4.16.9 allows local users to obtain sensitive information from kernel memory via adjtimex.

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 atalk_recvmsg function in net/appletalk/ddp.c in     the Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7267i1/4%0

  - fs/f2fs/segment.c in the Linux kernel allows local     users to cause a denial of service (NULL pointer     dereference and panic) by using a noflush_merge option     that triggers a NULL value for a flush_cmd_control data     structure.(CVE-2017-18241i1/4%0

  - fs/pnode.c in the Linux kernel before 4.5.4 does not     properly traverse a mount propagation tree in a certain     case involving a slave mount, which allows local users     to cause a denial of service (NULL pointer dereference     and OOPS) via a crafted series of mount system     calls.(CVE-2016-4581i1/4%0

  - drivers/vhost/net.c in the Linux kernel before 3.13.10,     when mergeable buffers are disabled, does not properly     validate packet lengths, which allows guest OS users to     cause a denial of service (memory corruption and host     OS crash) or possibly gain privileges on the host OS     via crafted packets, related to the handle_rx and     get_rx_bufs functions.(CVE-2014-0077i1/4%0

  - It was found that the fix for CVE-2016-9576 was     incomplete: the Linux kernel's sg implementation did     not properly restrict write operations in situations     where the KERNEL_DS option is set. A local attacker to     read or write to arbitrary kernel memory locations or     cause a denial of service (use-after-free) by     leveraging write access to a /dev/sg     device.(CVE-2016-10088i1/4%0

  - ** DISPUTED ** An issue was discovered in the Linux     kernel through 4.17.2. Since the page allocator does     not yield CPU resources to the owner of the oom_lock     mutex, a local unprivileged user can trivially lock up     the system forever by wasting CPU resources from the     page allocator (e.g., via concurrent page fault events)     when the global OOM killer is invoked. NOTE: the     software maintainer has not accepted certain proposed     patches, in part because of a viewpoint that 'the     underlying problem is non-trivial to     handle.'(CVE-2016-10723i1/4%0

  - A flaw was found in the way the Linux kernel's ASN.1     DER decoder processed certain certificate files with     tags of indefinite length. A local, unprivileged user     could use a specially crafted X.509 certificate DER     file to crash the system or, potentially, escalate     their privileges on the system.(CVE-2016-0758i1/4%0

  - A flaw was found in the way the Linux kernel's Stream     Control Transmission Protocol (SCTP) implementation     handled the association's output queue. A remote     attacker could send specially crafted packets that     would cause the system to use an excessive amount of     memory, leading to a denial of     service.(CVE-2014-3688i1/4%0

  - A use-after-free flaw was found in the way the     ping_init_sock() function of the Linux kernel handled     the group_info reference counter. A local, unprivileged     user could use this flaw to crash the system or,     potentially, escalate their privileges on the     system.(CVE-2014-2851i1/4%0

  - The compat_get_timex function in kernel/compat.c in the     Linux kernel before 4.16.9 allows local users to obtain     sensitive information from kernel memory via     adjtimex.(CVE-2018-11508i1/4%0

  - The cdc_parse_cdc_header() function in     'drivers/usb/core/message.c' in the Linux kernel,     before 4.13.6, allows local users to cause a denial of     service (out-of-bounds read and system crash) 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-2017-16534i1/4%0

  - A flaw was found in the crypto subsystem of the Linux     kernel before version kernel-4.15-rc4. The 'null     skcipher' was being dropped when each af_alg_ctx was     freed instead of when the aead_tfm was freed. This can     cause the null skcipher to be freed while it is still     in use leading to a local user being able to crash the     system or possibly escalate     privileges.(CVE-2018-14619i1/4%0

  - The crypto_skcipher_init_tfm function in     crypto/skcipher.c in the Linux kernel through 4.11.2     relies on a setkey function that lacks a key-size     check, which allows local users to cause a denial of     service (NULL pointer dereference) via a crafted     application.(CVE-2017-9211i1/4%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 30955111.(CVE-2016-6786i1/4%0

  - The KEYS subsystem in the Linux kernel omitted an     access-control check when writing a key to the current     task's default keyring, allowing a local user to bypass     security checks to the keyring. This compromises the     validity of the keyring for those who rely on     it.(CVE-2017-17807i1/4%0

  - A use-after-free flaw was found in the way the Linux     kernel's SCTP implementation handled authentication key     reference counting during INIT collisions. A remote     attacker could use this flaw to crash the system or,     potentially, escalate their privileges on the     system.(CVE-2015-1421i1/4%0

  - The waitid implementation in kernel/exit.c in the Linux     kernel through 4.13.4 accesses rusage data structures     in unintended cases. This can allow local users to     obtain sensitive information and bypass the KASLR     protection mechanism via a crafted system     call.(CVE-2017-14954i1/4%0

  - It was found that the Linux kernel's keyring     implementation would leak memory when adding a key to a     keyring via the add_key() function. A local attacker     could use this flaw to exhaust all available memory on     the system.(CVE-2015-1333i1/4%0

  - The msm_ipc_router_close function in     net/ipc_router/ipc_router_socket.c in the ipc_router     component for the Linux kernel 3.x, as used in Qualcomm     Innovation Center (QuIC) Android contributions for MSM     devices and other products, allow attackers to cause a     denial of service (NULL pointer dereference) or     possibly have unspecified other impact by triggering     failure of an accept system call for an AF_MSM_IPC     socket.(CVE-2016-5870i1/4%0

  - 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 (i1/4z1024) index value.(CVE-2017-1000252i1/4%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.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3718-2 advisory.

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

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3718-1 advisory.

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

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3697-2 advisory.

  - Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit()     function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of     certain crafted system calls. (CVE-2018-1130)

  - The compat_get_timex function in kernel/compat.c in the Linux kernel before 4.16.9 allows local users to     obtain sensitive information from kernel memory via adjtimex. (CVE-2018-11508)

  - 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)

  - In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the
    _sctp_make_chunk() function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be     exploited to cause a kernel crash. (CVE-2018-5803)

  - The futex_requeue function in kernel/futex.c in the Linux kernel before 4.14.15 might allow attackers to     cause a denial of service (integer overflow) or possibly have unspecified other impact by triggering a     negative wake or requeue value. (CVE-2018-6927)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

  - Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux     kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read     accesses to files in the /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file. (CVE-2018-7757)

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

It was discovered that a NULL pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1130)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for 64 bit Linux kernels did not properly initialize memory returned to user space in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-11508)

Wang Qize discovered that an information disclosure vulnerability existed in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A local attacker could use this to expose sensitive information (kernel pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel did not properly validate userspace provided payload lengths in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in the floppy driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2018-7757).

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.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3695-2 advisory.

  - The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always     initialize the crc32c checksum driver, which allows attackers to cause a denial of service     (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
    (CVE-2018-1094)

  - The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows     local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out     kernel memory. (CVE-2018-10940)

  - The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not     properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently     allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a     crafted ext4 image. (CVE-2018-1095)

  - The compat_get_timex function in kernel/compat.c in the Linux kernel before 4.16.9 allows local users to     obtain sensitive information from kernel memory via adjtimex. (CVE-2018-11508)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

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 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3695-1 advisory.

  - The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always     initialize the crc32c checksum driver, which allows attackers to cause a denial of service     (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
    (CVE-2018-1094)

  - The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows     local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out     kernel memory. (CVE-2018-10940)

  - The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not     properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently     allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a     crafted ext4 image. (CVE-2018-1095)

  - The compat_get_timex function in kernel/compat.c in the Linux kernel before 4.16.9 allows local users to     obtain sensitive information from kernel memory via adjtimex. (CVE-2018-11508)

  - An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel     through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM     ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the     location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)

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	Severity
124987	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1534)	Nessus	Huawei Local Security Checks	high
111267	Ubuntu 16.04 LTS : Linux kernel (HWE) regression (USN-3718-2)	Nessus	Ubuntu Local Security Checks	medium
111266	Ubuntu 18.04 LTS : Linux kernel regression (USN-3718-1)	Nessus	Ubuntu Local Security Checks	medium
110899	Ubuntu 16.04 LTS : Linux kernel (OEM) vulnerabilities (USN-3697-2)	Nessus	Ubuntu Local Security Checks	high
110898	Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3697-1)	Nessus	Ubuntu Local Security Checks	high
110895	Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3695-2)	Nessus	Ubuntu Local Security Checks	medium
110894	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3695-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2018-11508

medium

Tenable Plugins

high

medium

medium

high

high

medium

medium