Input validation error in PHP - CVE-2007-1700
Published: October 30, 2018 / Updated: June 11, 2025
Vulnerability identifier: #VU110422
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-2007-1700
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.
The session extension in PHP 4 before 4.4.5, and PHP 5 before 5.2.1, calculates the reference count for the session variables without considering the internal pointer from the session globals, which allows context-dependent attackers to execute arbitrary code via a crafted string in the session_register after unsetting HTTP_SESSION_VARS and _SESSION, which destroys the session data Hashtable.
How to mitigate CVE-2007-1700
Install update from vendor's website.
Sources
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01056506
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01086137
- http://secunia.com/advisories/25056
- http://secunia.com/advisories/25057
- http://secunia.com/advisories/25062
- http://secunia.com/advisories/25423
- http://secunia.com/advisories/25445
- http://secunia.com/advisories/25850
- http://security.gentoo.org/glsa/glsa-200705-19.xml
- 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-30-2007.html
- http://www.securityfocus.com/bid/23119
- http://www.ubuntu.com/usn/usn-455-1
- http://www.vupen.com/english/advisories/2007/1991
- http://www.vupen.com/english/advisories/2007/2374
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33520