CVE-2012-0911

TikiWiki CMS/Groupware before 6.7 LTS and before 8.4 allows remote attackers to execute arbitrary PHP code via a crafted serialized object in the (1) cookieName to lib/banners/bannerlib.php; (2) printpages or (3) printstructures parameter to (a) tiki-print_multi_pages.php or (b) tiki-print_pages.php; or (4) sendpages, (5) sendstructures, or (6) sendarticles parameter to tiki-send_objects.php, which is not properly handled when processed by the unserialize function.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• http://archives.neohapsis.com/archives/bugtraq/2012-07/0020.html
• http://dev.tiki.org/item4109
• http://info.tiki.org/article190-Tiki-Wiki-CMS-Groupware-Updates-Tiki-6-7-LTS
• http://info.tiki.org/article191-Tiki-Releases-8-4
• http://osvdb.org/83534
• http://www.exploit-db.com/exploits/19573
• http://www.exploit-db.com/exploits/19630
• http://www.securityfocus.com/bid/54298
• https://exchange.xforce.ibmcloud.com/vulnerabilities/76758
• http://archives.neohapsis.com/archives/bugtraq/2012-07/0020.html
• http://dev.tiki.org/item4109
• http://info.tiki.org/article190-Tiki-Wiki-CMS-Groupware-Updates-Tiki-6-7-LTS
• http://info.tiki.org/article191-Tiki-Releases-8-4
• http://osvdb.org/83534
• http://www.exploit-db.com/exploits/19573
• http://www.exploit-db.com/exploits/19630
• http://www.securityfocus.com/bid/54298
• https://exchange.xforce.ibmcloud.com/vulnerabilities/76758