Input validation error in PHP - CVE-2012-2336
Published: May 11, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44087
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2012-2336
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
sapi/cgi/cgi_main.c in PHP before 5.3.13 and 5.4.x before 5.4.3, when configured as a CGI script (aka php-cgi), does not properly handle query strings that lack an = (equals sign) character, which allows remote attackers to cause a denial of service (resource consumption) by placing command-line options in the query string, related to lack of skipping a certain php_getopt for the 'T' case. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1823.
How to mitigate CVE-2012-2336
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00003.html
- http://secunia.com/advisories/49014
- http://www.php.net/archive/2012.php#id2012-05-08-1
- http://www.php.net/ChangeLog-5.php#5.4.3
- https://bugs.php.net/bug.php?id=61910
- https://bugs.php.net/patch-display.php?bug_id=61910&patch=CVE-2012-1823.patch&revision=1336251592&display=1
- https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862