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>> OpenSSH "ForceCommand" Directive Security Bypass Weakness

Title : OpenSSH "ForceCommand" Directive Security Bypass Weakness
VUPEN ID : VUPEN/ADV-2008-1035
CVE ID : CVE-2008-1657
Rated as : Low Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2008-03-31


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

A weakness has been identified in OpenSSH, which could be exploited by local attackers to bypass security restrictions. This issue is caused by an error in the "ForceCommand" directive enabled via "sshd_config", which could be exploited by malicious users with write access to the "~/.ssh/rc" file to execute arbitrary commands.

Affected Products

OpenSSH versions prior to 4.9
OpenSSH versions prior to 4.9p1

Solution

Upgrade to OpenSSH version 4.9 or 4.9p1 :
http://www.openssh.org/

References

http://www.vupen.com/english/advisories/2008/1035
http://www.openssh.com/txt/release-4.9

Credits

Vulnerability reported by the vendor.

ChangeLog

2008-03-31 : Initial release

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