Several vulnerabilities have been discovered in Squid, the internet object cache, the popular WWW proxy cache. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities:
LDAP is very forgiving about spaces in search filters and this could be abused to log in using several variants of the login name, possibly bypassing explicit access controls or confusing accounting.
Cache pollution/poisoning via HTTP response splitting has been discovered.
The meaning of the access controls becomes somewhat confusing if any of the referenced ACLs (access control lists) is declared empty, without any members.
The length argument of the WCCP recvfrom() call is larger than it should be. An attacker may send a larger than normal WCCP packet that could overflow a buffer.
For the stable distribution (woody) these problems have been fixed in version 2.4.6-2woody6.
For the unstable distribution (sid) these problems have been fixed in version 2.5.7-7.
We recommend that you upgrade your squid package.
MD5 checksums of the listed files are available in the original advisory.