CVE Catalog

CVE-2015-6564

High
Published: Translated: NVD NIST

Summary

CVE-2015-6564 is a use-after-free vulnerability in the mm_answer_pam_free_ctx function in sshd in OpenSSH before version 7.0 on non-OpenBSD platforms. It may allow local users to gain privileges by sending an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request.

Risk Assessment

Organizations may be exposed to unauthorized access by local users, potentially leading to privilege escalation and security breaches.

Recommendation

It is recommended to upgrade OpenSSH to version 7.0 or later to mitigate this vulnerability and to monitor local user access.

Related vulnerabilities

Original NVD description (English source)

Use-after-free vulnerability in the mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH before 7.0 on non-OpenBSD platforms 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS