All vulnerabilities

Servers and applications

CVE-2015-6563

The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.

Severity
Medium 6.4
Published
24 Aug 2015
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Every version up to 6.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-6563
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-6563