CVE-2025-34067

An unauthenticated remote command execution vulnerability exists in the applyCT component of the Hikvision Integrated Security Management Platform due to the use of a vulnerable version of the Fastjson library. The endpoint /bic/ssoService/v1/applyCT deserializes untrusted user input, allowing an attacker to trigger Fastjsons auto-type feature to load arbitrary Java classes. By referencing a malicious class via an LDAP URL, an attacker can achieve remote code execution on the underlying system. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-08 UTC.

Weakness

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

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://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/iot/HIKVISION/HIKVISION%20%E7%BB%BC%E5%90%88%E5%AE%89%E9%98%B2%E7%AE%A1%E7%90%86%E5%B9%B3%E5%8F%B0%20applyCT%20Fastjson%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E.md
• https://s4e.io/tools/hikvision-applyct-remote-code-execution
• https://vulncheck.com/advisories/hikvision-ismp-rce-applyct