CVE-2015-6564
7.0
HIGH
CVSS 3.1
EPSS 4.1%
Description
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.
How to fix CVE-2015-6564
To remediate CVE-2015-6564, upgrade the affected package to a fixed version below.
- Debian/openssh—upgrade to 1:6.9p1-1 or later
Is CVE-2015-6564 being exploited?
Low — EPSS is 4.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:6.9p1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |