Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2777-1)

medium Nessus Plugin ID 86468

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Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

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-Andre 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).

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.

Solution

Update the affected linux-image-3.16-generic, linux-image-3.16-generic-lpae and / or linux-image-3.16-lowlatency packages.

See Also

https://usn.ubuntu.com/2777-1/

Plugin Details

Severity: Medium

ID: 86468

File Name: ubuntu_USN-2777-1.nasl

Version: 2.12

Type: local

Agent: unix

Published: 10/20/2015

Updated: 1/19/2021

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16-lowlatency, cpe:/o:canonical:ubuntu_linux:14.04

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

Exploit Ease: No known 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