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Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2776-1)

high Nessus Plugin ID 86467

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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-2776-1 advisory.

 It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service.
 (CVE-2015-0272)

 It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. (CVE-2015-5156)

 It was discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel did not verify sockets were properly bound before attempting to send a message, which could cause a NULL pointer dereference. An attacker could use this to cause a denial of service (system crash). (CVE-2015-6937)

 Ben Hutchings discovered that the Advanced Union Filesystem (aufs) for the Linux kernel did not correctly handle references of memory mapped files from an aufs mount. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges.
 (CVE-2015-7312)

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-2776-1

Plugin Details

Severity: High

ID: 86467

File Name: ubuntu_USN-2776-1.nasl

Version: 2.14

Type: local

Agent: unix

Published: 10/20/2015

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2015-7312

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/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

CVSS Score Source: CVE-2015-0272

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-powerpc64-emb, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-66-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: 10/19/2015

Vulnerability Publication Date: 10/19/2015

Reference Information

CVE: CVE-2015-0272, CVE-2015-5156, CVE-2015-6937, CVE-2015-7312

USN: 2776-1