Input validation error in PHP - CVE-2006-6383
Published: October 17, 2018 / Updated: June 10, 2025
Vulnerability identifier: #VU110465
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2006-6383
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a local user to read and manipulate data.
PHP 5.2.0 and 4.4 allows local users to bypass safe_mode and open_basedir restrictions via a malicious path and a null byte before a ";" in a session_save_path argument, followed by an allowed path, which causes a parsing inconsistency in which PHP validates the allowed path but sets session.save_path to the malicious path.
Affected software
PHP
How to mitigate CVE-2006-6383
Install update from vendor's website.
PHP - addressed in versions 4.4.0, 5.2.0
Links to Public Exploits and PoC-codes
External References
- http://cvs.php.net/viewcvs.cgi/php-src/ext/session/session.c?r1=1.336.2.53.2.7&r2=1.336.2.53.2.8
- http://lists.suse.com/archive/suse-security-announce/2007-Mar/0003.html
- http://secunia.com/advisories/24022
- http://secunia.com/advisories/24514
- http://securityreason.com/achievement_securityalert/43
- http://securityreason.com/securityalert/2000
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:038
- http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.010.html
- http://www.securityfocus.com/archive/1/453938/30/9270/threaded
- http://www.securityfocus.com/bid/21508