|
|
>> PHP Multiple Function Buffer Overflow and Security Bypass Vulnerabilities
|
Multiple vulnerabilities have been identified in PHP, which could be exploited by attackers to bypass security restrictions, cause a denial of service or potentially compromise a vulnerable web server.
The first issue is caused by errors in the "dl()" function when processing user-supplied arguments, which could be exploited by attackers to bypass security restrictions.
The second vulnerability is caused by errors in the "htmlentities" and "htmlspecialchars" functions when processing partial multibyte sequences, which could be exploited by attackers to bypass security restrictions.
The third issue is caused by buffer overflow errors in the glibc implementations of the "fnmatch()", "setlocale()" and "glob()" functions, which could be exploited by attackers to execute arbitrary code.
The fourth vulnerability is caused by an error when handling ".htaccess" files, which could be exploited by attackers to modify the "mail.force_extra_parameters" php.ini directive and bypass security restrictions.
The fifth issue is caused by an unspecified error related to automatic session id insertion.
The sixth vulnerability is caused by an error when handling "ini_set()" functions, which could be exploited to overwrite certain values set in "httpd.conf".
The seventh issue is caused by errors in PCRE. For additional information, see : VUPEN/ADV-2007-3725
Affected Products
PHP versions prior to 5.2.5
Solution
Upgrade to PHP version 5.2.5 :
http://www.php.net/downloads.php
References
http://www.vupen.com/english/advisories/2007/3825
http://www.php.net/releases/5_2_5.php
Credits
Vulnerabilities reported by Laurent Gaffie, Rasmus Lerdorf, SecurityReason and the vendor.
ChangeLog
2007-11-12 : Initial release
Vulnerability Management
Subscribe to VUPEN VNS and receive real-time alerts when new advisories or patches relevant to your systems and network configurations are available.
Feedback
If you have additional information or corrections for this security advisory please submit them via our contact form. | |
|
