Input validation error in PHP - CVE-2012-4388
Published: September 8, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43610
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-4388
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 manipulate data.
The sapi_header_op function in main/SAPI.c in PHP 5.4.0RC2 through 5.4.0 does not properly determine a pointer during checks for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1398.
How to mitigate CVE-2012-4388
Install update from vendor's website.
Sources
- http://article.gmane.org/gmane.comp.php.devel/70584
- http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00006.html
- http://openwall.com/lists/oss-security/2012/08/29/5
- http://openwall.com/lists/oss-security/2012/09/02/1
- http://openwall.com/lists/oss-security/2012/09/05/15
- http://openwall.com/lists/oss-security/2012/09/07/3
- http://security-tracker.debian.org/tracker/CVE-2012-4388
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_4/main/SAPI.c?r1=323986&r2=323985&pathrev=323986
- http://www.securitytracker.com/id?1027463
- http://www.ubuntu.com/usn/USN-1569-1
- https://bugs.php.net/bug.php?id=60227