Permissions, Privileges, and Access Controls in PHP - CVE-2009-3558

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Main Vulnerability Database Vulnerabilities #VU110320

Permissions, Privileges, and Access Controls in PHP - CVE-2009-3558

Published: October 30, 2018 / Updated: June 8, 2025


Vulnerability identifier: #VU110320
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2009-3558
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
PHP
Software vendor:
PHP Group

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The posix_mkfifo function in ext/posix/posix.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass open_basedir restrictions, and create FIFO files, via the pathname and mode arguments, as demonstrated by creating a .htaccess file. Access Complexity selected medium according to the information from X-force link regarding enabling "open_basedir" option. http://xforce.iss.net/xforce/xfdb/53568


Remediation

Install update from vendor's website.

External links