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>> Cygwin "setup.exe" Packages Verification Security Weakness

Title : Cygwin "setup.exe" Packages Verification Security Weakness
VUPEN ID : VUPEN/ADV-2008-2321
CVE ID : CVE-2008-3323
CWE ID : CWE-345
Rated as : Low Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2008-08-11


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 Cygwin, which could be exploited by attackers to bypass security restrictions. This issue is caused by an error in the "setup.exe" utility that does not properly verify the integrity of downloaded package list and packages, which could be exploited by attackers to compromise a vulnerable system by tricking a user into downloading a package from a malicious or compromised mirror.

Affected Products

Cygwin setup.exe versions prior to 2.573.2.3

Solution

Upgrade to Cygwin setup.exe version 2.573.2.3 :
http://cygwin.com/setup.exe

References

http://www.vupen.com/english/advisories/2008/2321
http://cygwin.com/ml/cygwin-announce/2008-08/msg00001.html
http://www.security-objectives.com/advisories/SECOBJADV-2008-02.txt

Credits

Vulnerability reported by Derek Callaway (Security Objectives).

ChangeLog

2008-08-11 : Initial release

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