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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 88%
Affected Products (NVD)
VendorProductVersion
openbsdopenssh
𝑥
≤ 6.9
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
openssh
bookworm
1:9.2p1-2+deb12u3
fixed
bookworm (security)
1:9.2p1-2+deb12u3
fixed
bullseye
1:8.4p1-5+deb11u3
fixed
bullseye (security)
1:8.4p1-5+deb11u3
fixed
sid
1:9.9p1-3
fixed
squeeze
no-dsa
trixie
1:9.9p1-3
fixed
wheezy
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openssh
precise
Fixed 1:5.9p1-5ubuntu1.6
released
trusty
Fixed 1:6.6p1-2ubuntu2.2
released
vivid
Fixed 1:6.7p1-5ubuntu1.2
released
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
openssh
RHEL 6
0:5.3p1-117.el6
fixed
RHEL 7
0:6.6.1p1-22.el7
fixed
openssh-askpass
RHEL 6
0:5.3p1-117.el6
fixed
RHEL 7
0:6.6.1p1-22.el7
fixed
openssh-clients
RHEL 6
0:5.3p1-117.el6
fixed
RHEL 7
0:6.6.1p1-22.el7
fixed
openssh-keycat
RHEL 7
0:6.6.1p1-22.el7
fixed
openssh-ldap
RHEL 6
0:5.3p1-117.el6
fixed
RHEL 7
0:6.6.1p1-22.el7
fixed
openssh-server
RHEL 6
0:5.3p1-117.el6
fixed
RHEL 7
0:6.6.1p1-22.el7
fixed
openssh-server-sysvinit
RHEL 7
0:6.6.1p1-22.el7
fixed
pam
RHEL 6
0:0.9.3-117.el6
fixed
RHEL 7
0:0.9.3-9.22.el7
fixed
Common Weakness Enumeration
References
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
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://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7
https://kc.mcafee.com/corporate/index?page=content&id=SB10136
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
https://security.gentoo.org/glsa/201512-04
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-764
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
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://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://github.com/openssh/openssh-portable/commit/5e75f5198769056089fb06c4d738ab0e5abc66f7
https://kc.mcafee.com/corporate/index?page=content&id=SB10136
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
https://security.gentoo.org/glsa/201512-04
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-764