OpenSSH ForceCommand directive command execution

openssh-forcecommand-command-execution (41549) The risk level is classified as HighHigh Risk

Description:

OpenSSH could allow a local attacker to execute arbitrary commands on the system, caused by an error when using the shd_config ForceCommand directive. An attacker could exploit this vulnerability via ~/.ssh/rc to execute arbitrary commands on the system.

*CVSS:

Base Score: 4.6
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 3.4
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Privileges

Remedy:

Upgrade to the latest version of OpenSSH (4.9 or later), available from the OpenSSH Web site. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Apple Web site: About the security content of Mac OS X v10.5.5 and Security Update 2008-006 .
  • Attachmate Technical Note 2374: Reflection for Secure IT UNIX Client and Server 7.0 Service Pack 1 (SP1): Fixes and Features.
  • OpenBSD 4.3 errata : 001: SECURITY FIX: March 30, 2008.
  • OpenSSH Changelog, Release 4.7: Changes since OpenSSH 4.7.
  • OpenSSH Web site: OpenSSH.
  • BID-28531: OpenSSH ForceCommand Command Execution Weakness
  • BID-30723: Attachmate Reflection for Secure IT Multiple Unspecified Security Vulnerabilities
  • CVE-2008-1657: OpenSSH 4.4 up to versions before 4.9 allows remote authenticated users to bypass the sshd_config ForceCommand directive by modifying the .ssh/rc session file.
  • GLSA-200804-03: OpenSSH: Privilege escalation
  • MDVSA-2008:098: Updated openssh packages fix vulnerability
  • SA29602: OpenSSH ForceCommand Bypass Weakness
  • SA29609: OpenBSD OpenSSH ForceCommand Bypass Weakness
  • SA31531: Reflection for Secure IT Multiple Vulnerabilities
  • SA31882: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1019733: OpenSSH Unsafe Default Configuration May Let Local Users Execute Arbitrary Commands
  • SUSE-SR:2008:009: SUSE Security Summary Report

Platforms Affected:

  • Apple Mac OS X 10.4.11
  • Apple Mac OS X 10.5
  • Apple Mac OS X 10.5.1
  • Apple Mac OS X 10.5.2
  • Apple Mac OS X 10.5.3
  • Apple Mac OS X 10.5.4
  • Apple Mac OS X Server 10.4.11
  • Apple Mac OS X Server 10.5
  • Apple Mac OS X Server 10.5.1
  • Apple Mac OS X Server 10.5.2
  • Apple Mac OS X Server 10.5.3
  • Apple Mac OS X Server 10.5.4
  • Attachmate Reflection for Secure IT 7.0 SP1
  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.1
  • OpenBSD OpenSSH 1.2
  • OpenBSD OpenSSH 1.2.1
  • OpenBSD OpenSSH 1.2.2
  • OpenBSD OpenSSH 1.2.27
  • OpenBSD OpenSSH 1.2.3
  • OpenBSD OpenSSH 2.1
  • OpenBSD OpenSSH 2.1.1
  • OpenBSD OpenSSH 2.1.1p4
  • OpenBSD OpenSSH 2.2
  • OpenBSD OpenSSH 2.2.0p1
  • OpenBSD OpenSSH 2.3
  • OpenBSD OpenSSH 2.3.0p1
  • OpenBSD OpenSSH 2.5
  • OpenBSD OpenSSH 2.5.1
  • OpenBSD OpenSSH 2.5.1p1
  • OpenBSD OpenSSH 2.5.1p2
  • OpenBSD OpenSSH 2.5.2
  • OpenBSD OpenSSH 2.5.2p1
  • OpenBSD OpenSSH 2.5.2p2
  • OpenBSD OpenSSH 2.9
  • OpenBSD OpenSSH 2.9.9
  • OpenBSD OpenSSH 2.9.9p1
  • OpenBSD OpenSSH 2.9.9p2
  • OpenBSD OpenSSH 2.9p1
  • OpenBSD OpenSSH 2.9p2
  • OpenBSD OpenSSH 3.0
  • OpenBSD OpenSSH 3.0.1
  • OpenBSD OpenSSH 3.0.1p1
  • OpenBSD OpenSSH 3.0.2
  • OpenBSD OpenSSH 3.0.2p1
  • OpenBSD OpenSSH 3.0p1
  • OpenBSD OpenSSH 3.1
  • OpenBSD OpenSSH 3.1p1
  • OpenBSD OpenSSH 3.2
  • OpenBSD OpenSSH 3.2.2
  • OpenBSD OpenSSH 3.2.2p1
  • OpenBSD OpenSSH 3.2.3
  • OpenBSD OpenSSH 3.2.3p1
  • OpenBSD OpenSSH 3.3
  • OpenBSD OpenSSH 3.3p1
  • OpenBSD OpenSSH 3.4
  • OpenBSD OpenSSH 3.4p1
  • OpenBSD OpenSSH 3.5
  • OpenBSD OpenSSH 3.5p1
  • OpenBSD OpenSSH 3.6
  • OpenBSD OpenSSH 3.6.1
  • OpenBSD OpenSSH 3.6.1p1
  • OpenBSD OpenSSH 3.6.1p2
  • OpenBSD OpenSSH 3.7
  • OpenBSD OpenSSH 3.7.1
  • OpenBSD OpenSSH 3.7.1p1
  • OpenBSD OpenSSH 3.7.1p2
  • OpenBSD OpenSSH 3.8
  • OpenBSD OpenSSH 3.8.1
  • OpenBSD OpenSSH 3.8.1p1
  • OpenBSD OpenSSH 3.9
  • OpenBSD OpenSSH 3.9.1
  • OpenBSD OpenSSH 3.9.1p1
  • OpenBSD OpenSSH 4.0
  • OpenBSD OpenSSH 4.0p1
  • OpenBSD OpenSSH 4.1
  • OpenBSD OpenSSH 4.1p1
  • OpenBSD OpenSSH 4.2
  • OpenBSD OpenSSH 4.2p1
  • OpenBSD OpenSSH 4.3
  • OpenBSD OpenSSH 4.3p1
  • OpenBSD OpenSSH 4.3p2
  • OpenBSD OpenSSH 4.4
  • OpenBSD OpenSSH 4.4p1
  • OpenBSD OpenSSH 4.5
  • OpenBSD OpenSSH 4.5p1
  • OpenBSD OpenSSH 4.6
  • OpenBSD OpenSSH 4.6p1
  • OpenBSD OpenSSH 4.7
  • OpenBSD OpenSSH 4.7p1
  • OpenBSD OpenSSH 4.9
  • Turbolinux Turbolinux 11 Server
  • Turbolinux Turbolinux 11 Server x64 Ed

Reported:

Mar 30, 2008

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