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
Description Last Modified:  08/23/2015

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 6.9 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.4


Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html
http://rhn.redhat.com/errata/RHSA-2016-0741.html
http://seclists.org/fulldisclosure/2015/Aug/54
http://www.openssh.com/txt/release-7.0 Vendor Advisory
http://www.openwall.com/lists/oss-security/2015/08/22/1
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/76317
https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7
https://kc.mcafee.com/corporate/index?page=content&id=SB10136
https://security.gentoo.org/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

Quick Info

CVE Dictionary Entry:
CVE-2015-6564
NVD Published Date:
08/23/2015
NVD Last Modified:
01/04/2018