Debian DSA-2850-1 : libyaml - heap-based buffer overflow

medium Nessus Plugin ID 72240

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Synopsis

The remote Debian host is missing a security-related update.

Description

Florian Weimer of the Red Hat Product Security Team discovered a heap-based buffer overflow flaw in LibYAML, a fast YAML 1.1 parser and emitter library. A remote attacker could provide a YAML document with a specially crafted tag that, when parsed by an application using libyaml, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application.

Solution

Upgrade the libyaml packages.

For the oldstable distribution (squeeze), this problem has been fixed in version 0.1.3-1+deb6u2.

For the stable distribution (wheezy), this problem has been fixed in version 0.1.4-2+deb7u2.

Plugin Details

Severity: Medium

ID: 72240

File Name: debian_DSA-2850.nasl

Version: 1.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/2/2014

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libyaml, cpe:/o:debian:debian_linux:6.0, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/31/2014

Reference Information

CVE: CVE-2013-6393

BID: 65258

DSA: 2850

Detections

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