Login | Register For Free | Help
Search for: (Advanced)

Mailing List Archive: Full Disclosure: Full-Disclosure

[CVE-2012-3446] Apache Libcloud - possible SSL MITM due to invalid regular expression used to validate the target server hostname

 

 

Full Disclosure full-disclosure RSS feed   Index | Next | Previous | View Threaded


tomaz at apache

Aug 1, 2012, 11:53 PM

Post #1 of 1 (146 views)
Permalink
[CVE-2012-3446] Apache Libcloud - possible SSL MITM due to invalid regular expression used to validate the target server hostname

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

CVE-2012-3446: Apache Libcloud - possible MITM due to invalid regular
expression used to validate the target server hostname

Severity: Medium

Vendor:

The Apache Software Foundation

Versions Affected:

Apache Libcloud 0.4.2 to 0.11.1

Versions prior to 0.4.2 don't perform any target server SSL certificate
validation.

Description:

When establishing a secure (SSL / TLS) connection to a target server an
invalid regular expression has been used for performing the hostname
verification. Subset instead of the full target server hostname has been
marked an an acceptable match for the given hostname.

For example, certificate with a hostname field of "aexample.com" was
considered
a valid certificate for domain "example.com".

Mitigation:

Users should upgrade to the latest version (0.11.1) which includes a fix.

Credit:

This issue was discovered by researchers from the University of Texas at
Austin
(Martin Georgiev, Suman Jana and Vitaly Shmatikov).

References:

http://libcloud.apache.org/security.html
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
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=U7hz
-----END PGP SIGNATURE-----

Full Disclosure full-disclosure RSS feed   Index | Next | Previous | View Threaded
 
 


Interested in having your list archived? Contact Gossamer Threads
 
  Web Applications & Managed Hosting Powered by Gossamer Threads Inc.