Detections
Analytics
CVE-2023-25136
medium
Description
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."
References
https://security.netapp.com/advisory/ntap-20230309-0003/
https://security.gentoo.org/glsa/202307-01
https://news.ycombinator.com/item?id=34711565
https://github.com/openssh/openssh-portable/commit/486c4dc3b83b4b67d663fb0fa62bc24138ec3946
http://www.openwall.com/lists/oss-security/2023/03/09/2
http://www.openwall.com/lists/oss-security/2023/03/06/1
http://www.openwall.com/lists/oss-security/2023/02/23/3
http://www.openwall.com/lists/oss-security/2023/02/22/2