TITLE:
Squid Username Whitespace Security Bypass Issue

SECUNIA ADVISORY ID:
SA13843

VERIFY ADVISORY:
http://secunia.com/advisories/13843/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From local network

SOFTWARE:
Squid 2.x
http://secunia.com/product/310/

DESCRIPTION:
A security issue has been reported in Squid, which can be exploited
by malicious users to bypass certain security restrictions.

The issue is caused due to some LDAP implementations ignoring
leading/trailing whitespaces in usernames. This can be exploited to
bypass certain ACLs based on usernames or trick some log analysis by
supplying a username with a whitespace in the beginning or end during
the authentication process.

The vulnerability has been reported in version 2.5 and prior.

SOLUTION:
Apply patch for 2.5.STABLE7:
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-ldap_spaces.patch

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-ldap_spaces

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