SB2015082401 - Privilege escalation in OpenSSH
Published: August 24, 2015 Updated: July 9, 2019
Security Bulletin ID
SB2015082401
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after free (CVE-ID: CVE-2015-6564)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use after free error within the mm_answer_pam_free_ctx() function in monitor.c in sshd daemon on non-OpenBSD platforms. A local unprivileged user can send an unexpected early MONITOR_REQ_PAM_FREE_CTX request and gain root privileges on the system.
Remediation
Install update from vendor's website.