An updated squid package that fixes two security issues is now available for Red Hat Enterprise Linux 5 and 6. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. A flaw was found in the way Squid handled malformed HTTP Range headers. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid. A buffer overflow flaw was found in Squid's DNS lookup module. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid. Red Hat would like to thank the Squid project for reporting the CVE-2014-3609 issue. Upstream acknowledges Matthew Daley as the original reporter. All Squid users are advised to upgrade to this updated package, which contains backported patches to correct these issues. After installing this update, the squid service will be restarted automatically.