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.
Vulnerability category: Memory Corruption
Products affected by CVE-2015-6564
- cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
Threat overview for CVE-2015-6564
Top countries where our scanners detected CVE-2015-6564
Top open port discovered on systems with this issue
22
IPs affected by CVE-2015-6564 2,728,724
Threat actors abusing to this issue?
Yes
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2015-6564
2.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 83 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-6564
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST |
CWE ids for CVE-2015-6564
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-6564
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https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-764
Broadcom Inc. | Connecting Everything
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http://www.openssh.com/txt/release-7.0
Vendor Advisory
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http://rhn.redhat.com/errata/RHSA-2016-0741.html
RHSA-2016:0741 - Security Advisory - Red Hat Customer Portal
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http://seclists.org/fulldisclosure/2015/Aug/54
Full Disclosure: BFS-SA-2015-002: OpenSSH PAM Privilege Separation Vulnerabilities
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https://security.gentoo.org/glsa/201512-04
OpenSSH: Multiple vulnerabilities (GLSA 201512-04) — Gentoo security
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http://www.securityfocus.com/bid/76317
OpenSSH PAM Support Multiple Remote Code Execution Vulnerabilities
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http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
Oracle Linux Bulletin - October 2015
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http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
Oracle Linux Bulletin - April 2016
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http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
Oracle Solaris Bulletin - January 2016
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http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html
[security-announce] SUSE-SU-2015:1581-1: important: Security update for
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http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html
[SECURITY] Fedora 21 Update: openssh-6.6.1p1-16.fc21
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https://kc.mcafee.com/corporate/index?page=content&id=SB10136
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https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
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http://www.openwall.com/lists/oss-security/2015/08/22/1
oss-security - Re: CVE request - OpenSSH 6.9 PAM privilege separation vulnerabilities
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https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7
set sshpam_ctxt to NULL after free · openssh/openssh-portable@5e75f51 · GitHub
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https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
[SECURITY] [DLA 1500-1] openssh security update
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