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Last updated: 7/30/2014 11:18:36 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2012-0814

Original release date: 01/27/2012
Last revised: 02/16/2012
Source: US-CERT/NIST

Overview

The auth_parse_options function in auth-options.c in sshd in OpenSSH before 5.7 provides debug messages containing authorized_keys command options, which allows remote authenticated users to obtain potentially sensitive information by reading these messages, as demonstrated by the shared user account required by Gitolite. NOTE: this can cross privilege boundaries because a user account may intentionally have no shell or filesystem access, and therefore may have no supported way to read an authorized_keys file in its own home directory.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 3.5 (LOW) (AV:N/AC:M/Au:S/C:P/I:N/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.8
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Required to exploit
Impact Type: Allows unauthorized disclosure of information

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External Source: MLIST
Name: [oss-security] 20120127 Re: CVE Request: Debian (others?) openssh-server: Forced Command handling leaks private information to ssh clients
External Source: CONFIRM
Name: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth-options.c.diff?r1=1.53;r2=1.54
External Source: XF
Name: opensshserver-commands-info-disc(72756)
External Source: MLIST
Name: [oss-security] 20120126 CVE Request: Debian (others?) openssh-server: Forced Command handling leaks private information to ssh clients
External Source: CONFIRM
Name: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth-options.c
External Source: BID
Name: 51702
External Source: OSVDB
Name: 78706
External Source: CONFIRM
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=657445
External Source: MLIST
Name: [oss-security] 20120126 Re: CVE Request: Debian (others?) openssh-server: Forced Command handling leaks private information to ssh clients
External Source: MLIST
Name: [oss-security] 20120126 Re: CVE Request: Debian (others?) openssh-server: Forced Command handling leaks private information to ssh clients

Vulnerable software and versions

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Collapse OROR
* cpe:/a:openbsd:openssh:5.6 and previous versions
* cpe:/a:openbsd:openssh:5.5
* cpe:/a:openbsd:openssh:5.4
* cpe:/a:openbsd:openssh:5.3
* cpe:/a:openbsd:openssh:5.2
* cpe:/a:openbsd:openssh:5.1
* cpe:/a:openbsd:openssh:5.0
* cpe:/a:openbsd:openssh:4.6
* cpe:/a:openbsd:openssh:4.5
* cpe:/a:openbsd:openssh:4.0p1
* cpe:/a:openbsd:openssh:4.2p1
* cpe:/a:openbsd:openssh:4.1p1
* cpe:/a:openbsd:openssh:4.3p2
* cpe:/a:openbsd:openssh:4.3p1
* cpe:/a:openbsd:openssh:4.4p1
* cpe:/a:openbsd:openssh:4.0
* cpe:/a:openbsd:openssh:4.1
* cpe:/a:openbsd:openssh:4.2
* cpe:/a:openbsd:openssh:4.3
* cpe:/a:openbsd:openssh:4.4
* cpe:/a:openbsd:openssh:4.9
* cpe:/a:openbsd:openssh:4.8
* cpe:/a:openbsd:openssh:4.7
* cpe:/a:openbsd:openssh:3.7.1p2
* cpe:/a:openbsd:openssh:3.8
* cpe:/a:openbsd:openssh:3.8.1
* cpe:/a:openbsd:openssh:3.8.1p1
* cpe:/a:openbsd:openssh:3.9
* cpe:/a:openbsd:openssh:3.9.1
* cpe:/a:openbsd:openssh:3.9.1p1
* cpe:/a:openbsd:openssh:3.0.2p1
* cpe:/a:openbsd:openssh:3.1
* cpe:/a:openbsd:openssh:3.2
* cpe:/a:openbsd:openssh:3.1p1
* cpe:/a:openbsd:openssh:3.0.1
* cpe:/a:openbsd:openssh:3.0p1
* cpe:/a:openbsd:openssh:3.0.2
* cpe:/a:openbsd:openssh:3.0.1p1
* cpe:/a:openbsd:openssh:3.0
* cpe:/a:openbsd:openssh:3.6.1p2
* cpe:/a:openbsd:openssh:3.7
* cpe:/a:openbsd:openssh:3.7.1
* cpe:/a:openbsd:openssh:3.7.1p1
* cpe:/a:openbsd:openssh:3.5p1
* cpe:/a:openbsd:openssh:3.6
* cpe:/a:openbsd:openssh:3.6.1
* cpe:/a:openbsd:openssh:3.6.1p1
* cpe:/a:openbsd:openssh:3.3p1
* cpe:/a:openbsd:openssh:3.4
* cpe:/a:openbsd:openssh:3.4p1
* cpe:/a:openbsd:openssh:3.5
* cpe:/a:openbsd:openssh:3.2.2
* cpe:/a:openbsd:openssh:3.2.2p1
* cpe:/a:openbsd:openssh:3.2.3p1
* cpe:/a:openbsd:openssh:3.3
* cpe:/a:openbsd:openssh:2.3.1
* cpe:/a:openbsd:openssh:2.3
* cpe:/a:openbsd:openssh:2.5
* cpe:/a:openbsd:openssh:2.1.1
* cpe:/a:openbsd:openssh:2.2
* cpe:/a:openbsd:openssh:2
* cpe:/a:openbsd:openssh:2.1
* cpe:/a:openbsd:openssh:2.9.9
* cpe:/a:openbsd:openssh:2.9p2
* cpe:/a:openbsd:openssh:2.9.9p2
* cpe:/a:openbsd:openssh:2.5.2
* cpe:/a:openbsd:openssh:2.5.1
* cpe:/a:openbsd:openssh:2.9p1
* cpe:/a:openbsd:openssh:2.9
* cpe:/a:openbsd:openssh:1.5.7
* cpe:/a:openbsd:openssh:1.5.8
* cpe:/a:openbsd:openssh:1.3
* cpe:/a:openbsd:openssh:1.5
* cpe:/a:openbsd:openssh:1.2.27
* cpe:/a:openbsd:openssh:1.2.3
* cpe:/a:openbsd:openssh:1.2.1
* cpe:/a:openbsd:openssh:1.2.2
* cpe:/a:openbsd:openssh:1.2
* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

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