CVE-2024-6944

A vulnerability was found in ZhongBangKeJi CRMEB up to 5.4.0 and classified as critical. Affected by this issue is the function get_image_base64 of the file PublicController.php. The manipulation of the argument file leads to deserialization. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-272066 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

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

• https://gist.github.com/J1rrY-learn/93a0cf71894570f4eb39344161beb44c
• https://vuldb.com/?ctiid.272066
• https://vuldb.com/?id.272066
• https://vuldb.com/?submit.374413
• https://gist.github.com/J1rrY-learn/93a0cf71894570f4eb39344161beb44c
• https://vuldb.com/?ctiid.272066
• https://vuldb.com/?id.272066
• https://vuldb.com/?submit.374413