CVE-2017-14141

The wiki_decode Developer System Helper function in the admin panel in Kaltura before 13.2.0 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via a crafted serialized object.

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://www.securityfocus.com/bid/100976
• https://github.com/kaltura/server/commit/6a6d14328b7a1493e8c47f9565461e5f88be20c9#diff-0770640cc76112cbf77bebc604852682
• https://telekomsecurity.github.io/assets/advisories/20170912_kaltura-advisory.txt
• http://www.securityfocus.com/bid/100976
• https://github.com/kaltura/server/commit/6a6d14328b7a1493e8c47f9565461e5f88be20c9#diff-0770640cc76112cbf77bebc604852682
• https://telekomsecurity.github.io/assets/advisories/20170912_kaltura-advisory.txt