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Vulnerability Details : CVE-2015-6564

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.
Publish Date : 2015-08-23 Last Update Date : 2018-09-11
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- CVSS Scores & Vulnerability Types

CVSS Score
6.9
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Gain privileges
CWE ID 264

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2015:2088: openssh security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20152088 unix
RHSA-2016:0741: openssh security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20160741 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-6564

# Product Type Vendor Product Version Update Edition Language
1 Application Openbsd Openssh 6.9 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Openbsd Openssh 1

- References For CVE-2015-6564

https://security.gentoo.org/glsa/201512-04
GENTOO GLSA-201512-04
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html CONFIRM
http://www.openwall.com/lists/oss-security/2015/08/22/1
MLIST [oss-security] 20150821 Re: CVE request - OpenSSH 6.9 PAM privilege separation vulnerabilities
http://www.securityfocus.com/bid/76317
BID 76317 OpenSSH PAM Support Multiple Remote Code Execution Vulnerabilities Release Date:2017-12-05
https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7 CONFIRM
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
MLIST [debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html CONFIRM
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html CONFIRM
http://rhn.redhat.com/errata/RHSA-2016-0741.html
REDHAT RHSA-2016:0741
http://seclists.org/fulldisclosure/2015/Aug/54
FULLDISC 20150813 BFS-SA-2015-002: OpenSSH PAM Privilege Separation Vulnerabilities
http://www.openssh.com/txt/release-7.0 CONFIRM
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html
FEDORA FEDORA-2015-13469
https://kc.mcafee.com/corporate/index?page=content&id=SB10136 CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html
SUSE SUSE-SU-2015:1581

- Metasploit Modules Related To CVE-2015-6564

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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