Fedora 20 : perl-YAML-LibYAML-0.41-4.fc20 (2014-4548)

medium Nessus Plugin ID 73366

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Synopsis

The remote Fedora host is missing a security update.

Description

This update addressed two security issues.

CVE-2013-6393: The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs an incorrect cast, which allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted tags in a YAML document, which triggers a heap-based buffer overflow.

CVE-2014-2525: 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.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected perl-YAML-LibYAML package.

Plugin Details

Severity: Medium

ID: 73366

File Name: fedora_2014-4548.nasl

Version: 1.5

Type: local

Agent: unix

Family: Fedora Local Security Checks

Published: 4/7/2014

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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: cpe:/o:fedoraproject:fedora:20, p-cpe:/a:fedoraproject:fedora:perl-yaml-libyaml

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 3/30/2014

Reference Information

CVE: CVE-2013-6393, CVE-2014-2525

BID: 65258

FEDORA: 2014-4548

Detections

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