CVE-2015-6563
- State
- Published
- Severity
- 6.4 Medium
- Published
- Aug 24, 2015
- Updated
- May 27, 2026
- Reserved
- Aug 21, 2015
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- [oss-security] 20150821 Re: CVE request - OpenSSH 6.9 PAM privilege separation vulnerabilitiesmailing-list
- FEDORA-2015-13469vendor-advisory
- APPLE-SA-2015-10-21-4vendor-advisory
- https://support.apple.com/HT205375
- 76317vdb-entry
- https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- GLSA-201512-04vendor-advisory
- http://www.openssh.com/txt/release-7.0
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- RHSA-2016:0741vendor-advisory
- 20150813 BFS-SA-2015-002: OpenSSH PAM Privilege Separation Vulnerabilitiesmailing-list
- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
- SUSE-SU-2015:1581vendor-advisory
- [debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security updatemailing-list
- https://security.netapp.com/advisory/ntap-20180201-0002/
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
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