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FreeBSD : LibYAML input sanitization errors (580cc46b-bb1e-11e3-b144-2c4138874f7d)

medium Nessus Plugin ID 73321

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

oCERT reports :

The LibYAML project is an open source YAML 1.1 parser and emitter written in C.

The library is affected by a heap-based buffer overflow which can lead to arbitrary code execution. The vulnerability is caused by lack of proper expansion for the string passed to the yaml_parser_scan_uri_escapes() function.

A specially crafted YAML file, with a long sequence of percent-encoded characters in a URL, can be used to trigger the overflow.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?984373e3

Plugin Details

Severity: Medium

ID: 73321

File Name: freebsd_pkg_580cc46bbb1e11e3b1442c4138874f7d.nasl

Version: 1.5

Type: local

Published: 4/4/2014

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:libyaml, p-cpe:/a:freebsd:freebsd:mingw32-libyaml, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 3/26/2014

Vulnerability Publication Date: 3/11/2014

Reference Information

CVE: CVE-2014-2525