Input validation error in PHP - CVE-2007-1521
Published: March 8, 2011 / Updated: June 12, 2025
Vulnerability identifier: #VU110432
CSH Severity: Medium
CVSS v4.0: 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:P/U:Green
CVE-ID: CVE-2007-1521
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
Double free vulnerability in PHP before 4.4.7, and 5.x before 5.2.2, allows context-dependent attackers to execute arbitrary code by interrupting the session_regenerate_id function, as demonstrated by calling a userspace error handler or triggering a memory limit violation.
How to mitigate CVE-2007-1521
Install update from vendor's website.
Sources
- http://docs.info.apple.com/article.html?artnum=306172
- http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html
- http://secunia.com/advisories/24505
- http://secunia.com/advisories/25025
- http://secunia.com/advisories/25056
- http://secunia.com/advisories/25057
- http://secunia.com/advisories/25062
- http://secunia.com/advisories/25445
- http://secunia.com/advisories/26235
- http://security.gentoo.org/glsa/glsa-200705-19.xml
- http://us2.php.net/releases/4_4_7.php
- http://us2.php.net/releases/5_2_2.php
- http://www.debian.org/security/2007/dsa-1282
- http://www.debian.org/security/2007/dsa-1283
- http://www.novell.com/linux/security/advisories/2007_32_php.html
- http://www.php-security.org/MOPB/MOPB-22-2007.html
- http://www.securityfocus.com/bid/22968
- http://www.securityfocus.com/bid/25159
- http://www.ubuntu.com/usn/usn-455-1
- http://www.vupen.com/english/advisories/2007/0960
- http://www.vupen.com/english/advisories/2007/2732