-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 National Cyber Alert System Technical Cyber Security Alert TA06-354A Mozilla Addresses Multiple Vulnerabilities Original release date: December 20, 2006 Last revised: -- Source: US-CERT Systems Affected * Mozilla Firefox * Mozilla Thunderbird * Mozilla SeaMonkey * Netscape Browser Other products based on Mozilla components may also be affected. Overview The Mozilla web browser and derived products contain several vulnerabilities, the most severe of which could allow a remote attacker to execute arbitrary code on an affected system. I. Description Mozilla has released new versions of Firefox, Thunderbird, and SeaMonkey to address several vulnerabilities. Further details about these vulnerabilities are available from Mozilla and the Vulnerability Notes Database. An attacker could exploit these vulnerabilities by convincing a user to view a specially-crafted HTML document, such as a web page or HTML email message. II. Impact While the impacts of the individual vulnerabilities vary, the most severe could allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. An attacker may also be able to cause a denial of service. III. Solution Upgrade These vulnerabilities are addressed in Mozilla Firefox 1.5.0.9, Mozilla Firefox 2.0.0.1, Mozilla Thunderbird 1.5.0.9, and SeaMonkey 1.0.7. Mozilla Firefox, Thunderbird, and SeaMonkey automatically check for updates by default. Support for Firefox 1.5 is scheduled to end in April 2007. According to Mozilla: Firefox 1.5.0.x will be maintained with security and stability updates until April 24, 2007. All users are strongly encouraged to upgrade to Firefox 2. Disable JavaScript and Java These vulnerabilities can be mitigated by disabling JavaScript and Java. For more information about configuring Firefox, please see the "Securing Your Web Browser" document. Netscape users should see the "Site Controls" document for details. Thunderbird disables JavaScript and Java by default. IV. References * US-CERT Vulnerability Notes - * Securing Your Web Browser - * Mozilla Foundation Security Advisories - * Known Vulnerabilities in Mozilla Products - * Mozilla Hall of Fame - * Site Controls - ____________________________________________________________________ The most recent version of this document can be found at: ____________________________________________________________________ Feedback can be directed to US-CERT Technical Staff. Please send email to with "TA06-354A Feedback VU#606260" in the subject. ____________________________________________________________________ For instructions on subscribing to or unsubscribing from this mailing list, visit . ____________________________________________________________________ Produced 2006 by US-CERT, a government organization. Terms of use: ____________________________________________________________________ Revision History December 20, 2006: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iQEVAwUBRYnzvexOF3G+ig+rAQK9zAf/UGbBwGhif6//bHrwt2vbm0pCzQkQGqNS N/vIWJWmKSQzF6T1FtqLzCECGTD+620EkUmQyX/2n2KnZ9D7y/Alxx4tfpmbp0fD bur153oupPeDKpVUN54/Fq4Ja+zSbIU7+5SIfflecAEfOdYJURDu2tO0jDO9gq7l rsDkkCk+RsVV2IP/7oWvsf3hi+WBxDYPGJudiirYdWrEg8Lk4KzzHaNDaJniNLCm hRylxHBOdyDNsXX01ln+FLwb2Gxc868VZVIFPYzGArdQ0Yw95F90fAaXguVEpPKz ASaHCJQHARFlvOBmF4IJw79p1HlKHoLZxsPlfe7+Lr9h9ByTI/bpgQ== =SWxr -----END PGP SIGNATURE-----