Red Hat Enterprise Linux: RHSA-2010:0499-01 Critical: SeaMonkey Issues

SeaMonkey is an open source web browser, email and newsgroup client, IRC chat client, and HTML editor.
Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause SeaMonkey to crash or, potentially, execute arbitrary code with the privileges of the user running SeaMonkey. (CVE-2010-1200)
A flaw was found in the way browser plug-ins interact. It was possible for a plug-in to reference the freed memory from a different plug-in, resulting in the execution of arbitrary code with the privileges of the user running SeaMonkey. (CVE-2010-1198)
An integer overflow flaw was found in the processing of malformed web content. A web page containing malicious content could cause SeaMonkey to crash or, potentially, execute arbitrary code with the privileges of the user running SeaMonkey. (CVE-2010-1199)
A flaw was found in the way SeaMonkey processed mail attachments. A specially-crafted mail message could cause SeaMonkey to crash. (CVE-2010-0163)
A flaw was found in the way SeaMonkey handled the "Content-Disposition: attachment" HTTP header when the "Content-Type: multipart" HTTP header was also present. A website that allows arbitrary uploads and relies on the "Content-Disposition: attachment" HTTP header to prevent content from being displayed inline, could be used by an attacker to serve malicious content to users. (CVE-2010-1197)
All SeaMonkey users should upgrade to these updated packages, which correct these issues. After installing the update, SeaMonkey must be restarted for the changes to take effect.