===================================================================== CERT-Renater Note d'Information No. 2006/VULN510 _____________________________________________________________________ DATE : 04/10/2006 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running Mozilla JavaScript Engine, Firefox, Thunderbird, SeaMonkey. ====================================================================== AusCERT Update AU-2006.0035 - [Win][UNIX/Linux][OSX] Unconfirmed vulnerabilities in Mozilla JavaScript engine may allow remote execution of arbitrary code 3 October 2006 AusCERT Update Summary ---------------------- Product: Mozilla JavaScript Engine Mozilla Firefox Mozilla Thunderbird Mozilla SeaMonkey Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated There have been reports [1][2][3][4] of the possibility of multiple vulnerabilities in Mozilla's JavaScript engine used in products such as Firefox. At this time AusCERT has not confirmed these vulnerabilities, and exact impacts are unknown. However it is believed that they may allow a remote attacker to execute arbitrary code on a victim's machine if they are able to entice the victim to a specially crafted website. Disabling JavaScript within Firefox and other Mozilla products may mitigate against these vulnerabilities. Users of Firefox are recommended to disable JavaScript, or to use the NoScript Firefox extension [5] and only enable JavaScript on trusted sites. AusCERT will continue to monitor the situation and release additional updates when more information becomes available. REFERENCES [1] ZDNet http://news.zdnet.com/2100-1009_22-6121608.html [2] SecuriTeam Blog http://blogs.securiteam.com/index.php/archives/657 [3] News.com http://news.com.com/2100-1002_3-6121608.html [4] US-CERT Current Activity http://www.us-cert.gov/current/current_activity.html#ff0day [5] NoScript Firefox extension http://www.noscript.net AusCERT has made every effort to ensure that the information contained in this document is accurate. However, the decision to use the information described is the responsibility of each user or organisation. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be consideredin accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. If you believe that your computer system has been compromised or attackedin any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================