CVE-2023-38408 Information

Description

The PKCS11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in /usr/lib is not necessarily safe for loading into ssh-agent.) NOTE: this issue exists because of an incomplete fix for CVE-2016-10009.

Reference

https://github.com/openbsd/src/commit/7bc29a9d5cd697290aa056e94ecee6253d3425f8 https://www.openssh.com/txt/release-9.3p2 https://www.qualys.com/2023/07/19/cve-2023-38408/rce-openssh-forwarded-ssh-agent.txt https://blog.qualys.com/vulnerabilities-threat-research/2023/07/19/cve-2023-38408-remote-code-execution-in-opensshs-forwarded-ssh-agent https://news.ycombinator.com/item?id=36790196 https://github.com/openbsd/src/commit/f8f5a6b003981bb824329dc987d101977beda7ca https://github.com/openbsd/src/commit/f03a4faa55c4ce0818324701dadbf91988d7351d https://www.openssh.com/security.html https://security.gentoo.org/glsa/202307-01 http://www.openwall.com/lists/oss-security/2023/07/20/1 http://www.openwall.com/lists/oss-security/2023/07/20/2 http://packetstormsecurity.com/files/173661/OpenSSH-Forwarded-SSH-Agent-Remote-Code-Execution.html