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 processed certain external ACL helperHTTP header fields that contained a delimiter that was not a comma. Aremote attacker could issue a crafted request to the Squid server, causingexcessive CPU use (up to 100%). (CVE-2009-2855)Note: The CVE-2009-2855 issue only affected non-default configurations thatuse an external ACL helper script.A flaw was found in the way Squid handled truncated DNS replies. A remoteattacker able to send specially-crafted UDP packets to Squid's DNS clientport could trigger an assertion failure in Squid's child process, causingthat child process to exit. (CVE-2010-0308)This update also fixes the following bugs:All users of squid should upgrade to this updated package, which resolvesthese issues. After installing this update, the squid service will berestarted automatically.