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Test ID:1.3.6.1.4.1.25623.1.0.105581
Category:General
Title:OpenSSH <= 7.2p1 Xauth Command Injection Vulnerability
Summary:OpenSSH is prone to an xauth command injection vulnerability.
Description:Summary:
OpenSSH is prone to an xauth command injection vulnerability.

Vulnerability Insight:
An authenticated user may inject arbitrary xauth commands by
sending an x11 channel request that includes a newline character in the x11 cookie. The newline
acts as a command separator to the xauth binary. This attack requires the server to have
'X11Forwarding yes' enabled. Disabling it, mitigates this vector.

Vulnerability Impact:
By injecting xauth commands one gains limited* read/write
arbitrary files, information leakage or xauth-connect capabilities.

Affected Software/OS:
OpenSSH versions before 7.2p2.

Solution:
Update to version 7.2p2 or later.

CVSS Score:
5.5

CVSS Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2016-3115
BugTraq ID: 84314
http://www.securityfocus.com/bid/84314
https://www.exploit-db.com/exploits/39569/
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184264.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179924.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183122.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178838.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180491.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183101.html
FreeBSD Security Advisory: FreeBSD-SA-16:14
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:14.openssh.asc
http://seclists.org/fulldisclosure/2016/Mar/46
http://seclists.org/fulldisclosure/2016/Mar/47
https://security.gentoo.org/glsa/201612-18
http://packetstormsecurity.com/files/136234/OpenSSH-7.2p1-xauth-Command-Injection-Bypass.html
https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-3115
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
RedHat Security Advisories: RHSA-2016:0465
http://rhn.redhat.com/errata/RHSA-2016-0465.html
RedHat Security Advisories: RHSA-2016:0466
http://rhn.redhat.com/errata/RHSA-2016-0466.html
http://www.securitytracker.com/id/1035249
CopyrightCopyright (C) 2016 Greenbone AG

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