SeaMonkey is an open source Web browser, advanced 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 as the user running SeaMonkey. (CVE-2008-2798, CVE-2008-2799, CVE-2008-2811)
Several flaws were found in the way malformed web content was displayed. A web page containing specially-crafted content could potentially trick a SeaMonkey user into surrendering sensitive information. (CVE-2008-2800)
Two local file disclosure flaws were found in SeaMonkey. A web page containing malicious content could cause SeaMonkey to reveal the contents of a local file to a remote attacker. (CVE-2008-2805, CVE-2008-2810)
A flaw was found in the way a malformed .properties file was processed by SeaMonkey. A malicious extension could read uninitialized memory, possibly leaking sensitive data to the extension. (CVE-2008-2807)
A flaw was found in the way SeaMonkey displayed information about self-signed certificates. It was possible for a self-signed certificate to contain multiple alternate name entries, which were not all displayed to the user, allowing them to mistakenly extend trust to an unknown site. (CVE-2008-2809)
All SeaMonkey users should upgrade to these updated packages, which contain backported patches to resolve these issues.