CVE-2023-0669

Fortra (formerly, HelpSystems) GoAnywhere MFT suffers from a pre-authentication command injection vulnerability in the License Response Servlet due to deserializing an arbitrary attacker-controlled object. This issue was patched in version 7.1.2.

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://packetstormsecurity.com/files/171789/Goanywhere-Encryption-Helper-7.1.1-Remote-Code-Execution.html
• https://attackerkb.com/topics/mg883Nbeva/cve-2023-0669/rapid7-analysis
• https://duo.com/decipher/fortra-patches-actively-exploited-zero-day-in-goanywhere-mft
• https://frycos.github.io/vulns4free/2023/02/06/goanywhere-forgotten.html
• https://github.com/rapid7/metasploit-framework/pull/17607
• https://infosec.exchange/@briankrebs/109795710941843934
• https://my.goanywhere.com/webclient/ViewSecurityAdvisories.xhtml#zerodayfeb1
• https://www.rapid7.com/blog/post/2023/02/03/exploitation-of-goanywhere-mft-zero-day-vulnerability/
• http://packetstormsecurity.com/files/171789/Goanywhere-Encryption-Helper-7.1.1-Remote-Code-Execution.html
• https://attackerkb.com/topics/mg883Nbeva/cve-2023-0669/rapid7-analysis
• https://duo.com/decipher/fortra-patches-actively-exploited-zero-day-in-goanywhere-mft
• https://frycos.github.io/vulns4free/2023/02/06/goanywhere-forgotten.html
• https://github.com/rapid7/metasploit-framework/pull/17607
• https://infosec.exchange/@briankrebs/109795710941843934
• https://my.goanywhere.com/webclient/ViewSecurityAdvisories.xhtml#zerodayfeb1
• https://www.rapid7.com/blog/post/2023/02/03/exploitation-of-goanywhere-mft-zero-day-vulnerability/