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Amazon Linux AMI : perl-YAML-LibYAML (ALAS-2014-324)

medium Nessus Plugin ID 73652

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

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.

Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before 0.1.6 allows context-dependent attackers to execute arbitrary code via a long sequence of percent-encoded characters in a URI in a YAML file.

Solution

Run 'yum update perl-YAML-LibYAML' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2014-324.html

Plugin Details

Severity: Medium

ID: 73652

File Name: ala_ALAS-2014-324.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/23/2014

Updated: 4/18/2018

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, 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:amazon:linux:perl-yaml-libyaml, p-cpe:/a:amazon:linux:perl-yaml-libyaml-debuginfo, cpe:/o:amazon:linux

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

Patch Publication Date: 4/17/2014

Reference Information

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

ALAS: 2014-324