HOME Downloads Documentation Development Blacklists Contributions Contact

  squidGuard Advisory: SG-2008-06-13

Bypass vulnerabilities fixed: Domain with trailing dot
Date: 13 June 2008

This only affects people using squidGuard with squid version 3.0 STABLE1 to STABLE5 (higher version may be affected as well; in any case, if you are running squid 3.0 make sure to patch). Squid version 2.6 is known to remove trailing dots from domains before passing the URLs to squidGuard.

Affected versions: 1.3, 1.2.1 and below
Corrected in version 1.4 alpha (and higher)

    By adding a trailing dot to the domain it is possible to bypass the filter and access blocked sites.

Patches for version 1.2.1 and 1.3 are available at:

Please read the installation instruction in the included Readme files.

 Getting started
 Destination ACLs
 Source ACLs
 Redirect Rule
 Time Constraints
 Regular Expressions

Runtime Options
About blocking
Known Issues
Other Sources

  © Powered by Shalla Secure Services KG 2007-2012