Input validation error in PHP - CVE-2011-0420
Published: February 19, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45307
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-0420
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows context-dependent attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference.
Affected software
PHP
Gentoo Linux
dev-lang/php
Gentoo Linux
dev-lang/php
How to mitigate CVE-2011-0420
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
dev-lang/php - update to 5.3.8
Links to Public Exploits and PoC-codes
External References
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
- http://securityreason.com/achievement_securityalert/94
- http://securityreason.com/securityalert/8087
- http://support.apple.com/kb/HT5002
- http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449
- http://www.debian.org/security/2011/dsa-2266
- http://www.exploit-db.com/exploits/16182
- http://www.kb.cert.org/vuls/id/210829
- http://www.securityfocus.com/archive/1/516504/100/0/threaded
- http://www.securityfocus.com/archive/1/516518/100/0/threaded
- http://www.securityfocus.com/bid/46429
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65437