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Netsikker nu! 2008
 
Cygwin Package Handling Security Issue
Secunia Advisory: SA31271
Release Date: 2008-08-08
Popularity: 2,596 views

Critical:
Not critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Cygwin 1.x
Cygwin 4.x

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CVE reference:CVE-2008-3323


Description:
A security issue has been reported in Cygwin, which can be exploited by malicious people to compromise a vulnerable system.

The security issue is caused due to setup.exe downloading package lists and packages over HTTP or FTP without proper integrity checks before installing the packages. This can be exploited to install malicious packages on an affected system when a user installs or updates packages.

Successful exploitation requires that a user is tricked into using a malicious mirror or e.g. a successful DNS spoofing attack.

The security issue is reported in setup.exe versions prior to 2.573.2.3.

Solution:
Update setup.exe to version 2.573.2.3.

Provided and/or discovered by:
Derek Callaway, Security Objectives

Original Advisory:
Cygwin:
http://cygwin.com/ml/cygwin-announce/2008-08/msg00001.html

Security Objectives:
http://www.security-objectives.com/advisories/SECOBJADV-2008-02.txt


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