CVE-2015-6564

Name of the Vulnerable Software and Affected Versions OpenSSH versions prior to 7.0

Description The issue is related to a use-after-free vulnerability in the mm answer pam free ctx function in monitor.c in sshd. This vulnerability might allow local users to gain privileges by leveraging control of the sshd uid to send an unexpectedly early MONITOR REQ PAM FREE CTX request. The vulnerability is associated with errors in privilege management.

Recommendations For OpenSSH versions prior to 7.0, update to version 7.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the mm answer pam free ctx function in monitor.c to minimize the risk of exploitation. Additionally, ensure that the sshd uid is properly managed to prevent unauthorized access.