Security Advisory SA42508 - Perl IO::Socket::SSL "verify_mode" Security Bypass Security Issue

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Secunia Advisory SA42508

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

Secunia Advisory

SA42508

Release Date

2010-12-06

Last Update

2010-12-27

Popularity

2,273 views

Comments

0 comments

Criticality level

Moderately critical

Impact

Security Bypass
Spoofing

Where

From remote

Authentication level

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Report reliability

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Solution Status

Vendor Patch

Systems affected

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Approve distribution

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Software:

IO::Socket::SSL 1.x

Secunia CVSS Score

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CVE Reference(s)

CVE-2010-4334 CVSS score available to Secunia VIM customers
CVE-2010-4501 CVSS score available to Secunia VIM customers

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

Changelog
Further details available to Secunia VIM customers

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

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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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Secunia Advisory SA42508

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

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