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Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3422-1)

high Nessus Plugin ID 103326

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3422-1 advisory.

 It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-1000251)

 It was discovered that the asynchronous I/O (aio) subsystem of the Linux kernel did not properly set permissions on aio memory mappings in some situations. An attacker could use this to more easily exploit other vulnerabilities. (CVE-2016-10044)

 Baozeng Ding and Andrey Konovalov discovered a race condition in the L2TPv3 IP Encapsulation 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-2016-10200)

 Andreas Gruenbacher and Jan Kara discovered that the filesystem implementation in the Linux kernel did not clear the setgid bit during a setxattr call. A local attacker could use this to possibly elevate group privileges. (CVE-2016-7097)

 Sergej Schumilo, Ralf Spenneberg, and Hendrik Schwartke discovered that the key management subsystem in the Linux kernel did not properly allocate memory in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-8650)

 Vlad Tsyrklevich discovered an integer overflow vulnerability in the VFIO PCI driver for the Linux kernel.
 A local attacker with access to a vfio PCI device file could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-9083, CVE-2016-9084)

 It was discovered that an information leak existed in __get_user_asm_ex() in the Linux kernel. A local attacker could use this to expose sensitive information. (CVE-2016-9178)

 CAI Qian discovered that the sysctl implementation in the Linux kernel did not properly perform reference counting in some situations. An unprivileged attacker could use this to cause a denial of service (system hang). (CVE-2016-9191)

 It was discovered that the keyring implementation in the Linux kernel in some situations did not prevent special internal keyrings from being joined by userspace keyrings. A privileged local attacker could use this to bypass module verification. (CVE-2016-9604)

 It was discovered that an integer overflow existed in the trace subsystem of the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2016-9754)

 Andrey Konovalov discovered that the IPv4 implementation in the Linux kernel did not properly handle invalid IP options in some situations. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-5970)

 Dmitry Vyukov discovered that the Linux kernel did not properly handle TCP packets with the URG flag. A remote attacker could use this to cause a denial of service. (CVE-2017-6214)

 It was discovered that a race condition existed in the AF_PACKET handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-6346)

 It was discovered that the keyring implementation in the Linux kernel did not properly restrict searches for dead keys. A local attacker could use this to cause a denial of service (system crash).
 (CVE-2017-6951)

 Dmitry Vyukov discovered that the generic SCSI (sg) subsystem in the Linux kernel contained a stack-based buffer overflow. A local attacker with access to an sg device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7187)

 Eric Biggers discovered a memory leak in the keyring implementation in the Linux kernel. A local attacker could use this to cause a denial of service (memory consumption). (CVE-2017-7472)

 It was discovered that a buffer overflow existed in the Broadcom FullMAC WLAN driver in the Linux kernel.
 A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7541)

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.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-3422-1

Plugin Details

Severity: High

ID: 103326

File Name: ubuntu_USN-3422-1.nasl

Version: 3.14

Type: local

Agent: unix

Published: 9/19/2017

Updated: 8/27/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.7

Temporal Score: 6

Vector: CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2017-1000251

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-132-powerpc64-smp

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/18/2017

Vulnerability Publication Date: 10/16/2016

Reference Information

CVE: CVE-2016-10044, CVE-2016-10200, CVE-2016-7097, CVE-2016-8650, CVE-2016-9083, CVE-2016-9084, CVE-2016-9178, CVE-2016-9191, CVE-2016-9604, CVE-2016-9754, CVE-2017-1000251, CVE-2017-5970, CVE-2017-6214, CVE-2017-6346, CVE-2017-6951, CVE-2017-7187, CVE-2017-7472, CVE-2017-7541

USN: 3422-1