PT-2009-6539 · Php · Php

Published 2009-12-24 · Updated 2018-10-30 · CVE-2009-4418

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions PHP versions prior to 5.3.1

Description The issue allows context-dependent attackers to cause a denial of service, specifically resource consumption, via a deeply nested serialized variable. This can be demonstrated by a string beginning with a:1: followed by many {a:1: sequences.

Recommendations For PHP versions prior to 5.3.1, consider updating to a version that is not affected by this issue to prevent potential denial of service attacks. As a temporary workaround, consider restricting the use of the unserialize function to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-189

Related Identifiers

CVE-2009-4418

Affected Products

Php

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2009-4418 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4418 · Note
• http://suspekt.org/2009/11/28/shocking-news-in-php-exploitation · Note
• http://suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf · Note