Ubuntu 11.10 : linux vulnerabilities (USN-1787-1)

medium Nessus Plugin ID 65788
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Synopsis

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

Description

Emese Revfy discovered that in the Linux kernel signal handlers could leak address information across an exec, making it possible to bypass ASLR (Address Space Layout Randomization). A local user could use this flaw to by pass ASLR to reliably deliver an exploit payload that would otherwise be stopped (by ASLR). (CVE-2013-0914)

A memoery use after free error was discover in the Linux kernel's tmpfs filesystem. A local user could exploit this flaw to gain privileges or cause a denial of service (system crash).
(CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2013-1792).

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 packages.

See Also

https://usn.ubuntu.com/1787-1/

Plugin Details

Severity: Medium

ID: 65788

File Name: ubuntu_USN-1787-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 4/3/2013

Updated: 9/19/2019

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: 6.2

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.0-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.0-generic-pae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.0-server, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.0-virtual, cpe:/o:canonical:ubuntu_linux:11.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/2/2013

Vulnerability Publication Date: 2/28/2013

Reference Information

CVE: CVE-2013-0914, CVE-2013-1767, CVE-2013-1792

BID: 58177, 58368, 58426

USN: 1787-1