Vulnerability Monitor

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CVE-2015-6563

The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.

Published

2015-08-24T01:59:00.127

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 1.9 (LOW)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:N/I:P/A:N

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

3.4

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openbsd	openssh	≤ 6.9	Yes
Operating System	apple	mac_os_x	≤ 10.11.0	Yes

References

http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0741.html ([email protected])
http://seclists.org/fulldisclosure/2015/Aug/54 ([email protected])
http://www.openssh.com/txt/release-7.0 Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/08/22/1 ([email protected])
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html ([email protected])
http://www.securityfocus.com/bid/76317 ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf ([email protected])
https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b ([email protected])
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html ([email protected])
https://security.gentoo.org/glsa/201512-04 ([email protected])
https://security.netapp.com/advisory/ntap-20180201-0002/ ([email protected])
https://support.apple.com/HT205375 ([email protected])
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766 ([email protected])
http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0741.html (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2015/Aug/54 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openssh.com/txt/release-7.0 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/08/22/1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/76317 (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201512-04 (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20180201-0002/ (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/HT205375 (af854a3a-2127-422b-91ae-364da2661108)
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766 (af854a3a-2127-422b-91ae-364da2661108)