4.304. squid

An updated squid package that fixes one security issue is now available for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) associated with each description below.
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Security Fix

CVE-2011-4096
An input validation flaw was found in the way Squid calculated the total number of resource records in the answer section of multiple name server responses. An attacker could use this flaw to cause Squid to crash.
Users of squid should upgrade to this updated package, which contains a backported patch to correct this issue. After installing this update, the squid service will be restarted automatically.
An updated squid package that fixes one bug is now available for Red Hat Enterprise Linux 6.
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Bug Fix

BZ#788449
Squid did not properly release allocated memory when generating error page contents, which caused memory leaks. Consequently, the Squid proxy server consumed a huge amount of memory within a short time period. This update fixes this memory leak and Squid no longer consumes more memory than expected.
All users of squid are advised to upgrade to this updated package, which fixes this bug. After installing this update, the squid service will be restarted automatically.
Updated squid packages that fix one bug are now available for Red Hat Enterprise Linux 6.
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Bug Fix

BZ#810115
Previously, Squid did not pass the ident value to a URL rewriter that was configured using the "url_rewrite_program" directive. As a consequence, the URL rewriter received the dash character ("-") as the user value instead of the correct user name. The underlying source code has been modified so that the URL rewriter now receives the correct user name in the described scenario.
All users of squid are advised to upgrade to these updated packages, which fix this bug. After installing this update, the squid service will be restarted automatically.
Updated squid packages that fix one bug are now available for Red Hat Enterprise Linux 6.
Squid is a high-performance proxy caching server for web clients that supports FTP, Gopher, and HTTP data objects.

Bug Fix

BZ#815682
Squid used as a transparent proxy can only handle the HTTP protocol. Previously, when using Squid as a transparent proxy, it was possible to define a URL in which the access protocol contained the asterisk character (*) or an unknown protocol namespace URI (Uniform Resource Identifier). As a consequence, an "Invalid URL" error message was logged in the access.log file during reload time. This update ensures that "http://" is always used in transparent proxy URLs, and error message is no longer logged in this scenario.
All users of squid are advised to upgrade to these updated packages, which fix this bug.