Use After Free in Openbsd Openssh
CVE-2015-6564
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.
EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Openbsd Openssh
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (mailing-list)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vdb-entry)
- cve@mitre.org
- cve@mitre.org (vendor-advisory)
- cve@mitre.org
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org (vendor-advisory)
Frequently asked questions
- What is CVE-2015-6564?
- CVE-2015-6564 is a high-severity vulnerability in Openbsd Openssh, classified under CWE-264. CVSS score: 7.0/10. Published 2015-08-24.
- How severe is CVE-2015-6564?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2015-6564 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.