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Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2777-1)

high Nessus Plugin ID 86468

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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-2777-1 advisory.

 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)

 Benjamin Randazzo discovered an information leak in the md (multiple device) driver when the bitmap_info.file is disabled. A local privileged attacker could use this to obtain sensitive information from the kernel. (CVE-2015-5697)

 Marc-Andr Lureau discovered that the vhost driver did not properly release the userspace provided log file descriptor. A privileged attacker could use this to cause a denial of service (resource exhaustion).
 (CVE-2015-6252)

 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-2777-1

Plugin Details

Severity: High

ID: 86468

File Name: ubuntu_USN-2777-1.nasl

Version: 2.15

Type: local

Agent: unix

Published: 10/20/2015

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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-2015-5156

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-51-generic-lpae

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/19/2015

Vulnerability Publication Date: 8/31/2015

Reference Information

CVE: CVE-2015-5156, CVE-2015-5697, CVE-2015-6252, CVE-2015-6937, CVE-2015-7312

USN: 2777-1