National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2015-6564 Detail

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.

Source:  MITRE      Last Modified:  08/23/2015

Quick Info

CVE Dictionary Entry:
CVE-2015-6564
Original release date:
08/23/2015
Last revised:
01/04/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
6.9 MEDIUM
Vector:
(AV:L/AC:M/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
10.0
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html External Source FEDORA FEDORA-2015-13469
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html External Source SUSE SUSE-SU-2015:1581
http://rhn.redhat.com/errata/RHSA-2016-0741.html External Source REDHAT RHSA-2016:0741
http://seclists.org/fulldisclosure/2015/Aug/54 External Source FULLDISC 20150813 BFS-SA-2015-002: OpenSSH PAM Privilege Separation Vulnerabilities
http://www.openssh.com/txt/release-7.0 Vendor Advisory External Source CONFIRM http://www.openssh.com/txt/release-7.0
http://www.openwall.com/lists/oss-security/2015/08/22/1 External Source MLIST [oss-security] 20150821 Re: CVE request - OpenSSH 6.9 PAM privilege separation vulnerabilities
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html External Source CONFIRM http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html External Source CONFIRM http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html External Source CONFIRM http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/76317 External Source BID 76317
https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7 External Source CONFIRM https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7
https://kc.mcafee.com/corporate/index?page=content&id=SB10136 External Source CONFIRM https://kc.mcafee.com/corporate/index?page=content&id=SB10136
https://security.gentoo.org/glsa/201512-04 External Source GENTOO GLSA-201512-04

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*    versions up to (including) 6.9

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 9 change records found - show changes