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Insecure Library Loading
Moderately critical

Perl IO::Socket::SSL "verify_mode" Security Bypass Security Issue

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Release Date:  2010-12-06    Last Update:  2010-12-27    Views:  2,763

Secunia Advisory SA42508

Where:

From remote

Impact:

Security Bypass, Spoofing

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A security issue has been reported in Perl IO::Socket::SSL, which can be exploited by malicious people to bypass certain security restrictions.

The security issue is caused due to IO::Socket::SSL falling back to the "VERIFY_NONE" verification mode if another verification mode is defined but no valid ca_file or ca_path is provided. This can be exploited to e.g. bypass the expected verification mode and conduct spoofing attacks.

The security issue is reported in versions prior to 1.35.


Solution:
Update to version 1.35.

Provided and/or discovered by:
Daniel Kahn Gillmor

Original Advisory:
IO::Socket::SSL changelog:
http://cpansearch.perl.org/src/SULLR/IO-Socket-SSL-1.35/Changes

Debian Bug #606058:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=606058

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Perl IO::Socket::SSL "verify_mode" Security Bypass Security Issue

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