Ubuntu 12.04 LTS / 12.10 / 13.10 : libyaml regression (USN-2098-2)

medium Nessus Plugin ID 72502

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

USN-2098-1 fixed a vulnerability in LibYAML. The security fix used introduced a regression that caused parsing failures for certain valid YAML files. This update fixes the problem.

We apologize for the inconvenience.

Florian Weimer discovered that LibYAML incorrectly handled certain large yaml documents. An attacker could use this issue to cause LibYAML to crash, resulting in a denial of service, or possibly execute arbitrary code.

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 libyaml-0-2 package.

Plugin Details

Severity: Medium

ID: 72502

File Name: ubuntu_USN-2098-2.nasl

Version: 1.8

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 2/14/2014

Updated: 1/19/2021

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

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libyaml-0-2, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:13.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/13/2014

Vulnerability Publication Date: 2/13/2014

Reference Information

BID: 65258

USN: 2098-2

Detections

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