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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2005.0373 -- UNIRAS Brief - 362/05 Two Mozilla Firefox Vulnerabilities 10 May 2005 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Mozilla Firefox 1.0.3 and prior Publisher: UNIRAS Operating System: BSD variants Linux variants Mac OS X UNIX variants Windows Impact: Execute Arbitrary Code/Commands Cross-site Scripting Access: Remote/Unauthenticated Original Bulletin: http://www.uniras.gov.uk/niscc/docs/br-20050509-00392.html Comment: While no official Mozilla patch exists for these vulnerabilities, AusCERT recommends that users uncheck the "Enable JavaScript" and "Allow web sites to install software" checkboxes from the "Web Features" options menu. - --------------------------BEGIN INCLUDED TEXT-------------------- - ----------------------------------------------------------------------------------- UNIRAS (UK Govt CERT) Briefing Notice - 362/05 dated 09.05.05 Time: 16:05 UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre) - ----------------------------------------------------------------------------------- UNIRAS material is also available from its website at www.uniras.gov.uk and Information about NISCC is available from www.niscc.gov.uk - ----------------------------------------------------------------------------------- Title ===== Two Mozilla Firefox Vulnerabilities Detail ====== UNIRAS have been made aware of two vulnerabilities in Mozilla Firefox. Proof of concept code is publicly available. As the issue is still developing, you may wish to visit the following pages for up to date information: MOZILLA.ORG "Security Advisory (May 8, 2005) The Mozilla Foundation is aware of two potentially critical Firefox security vulnerabilities as reported publicly Saturday, May 7th. There are currently no known active exploits of these vulnerabilities although a "proof of concept" has been reported. Changes to the Mozilla Update web service have been made to mitigate the risk of an exploit. Mozilla is aggressively working to provide a more comprehensive solution to these potential vulnerabilities and will provide that solution in a forthcoming security update. Users can further protect themselves today by temporarily disabling JavaScript or disabling "Allow web sites to install software" option in Tools > Options > Web Features." http://www.mozilla.org/security/#Security_Alerts SECUNIA.COM Rating: Extremely Critical (5/5) "Two vulnerabilities have been discovered in Firefox, which can be exploited by malicious people to conduct cross-site scripting attacks and compromise a user's system." "The vulnerabilities have been confirmed in version 1.0.3. Other versions may also be affected." http://secunia.com/advisories/15292/ UNIRAS are continuing to monitor the situation, and will provide additional information as and when it becomes available. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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 considered in 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. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in 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. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQn/3uSh9+71yA2DNAQICMAP/WdQQ2ERhMTTfL5gTMkw06LlhDnKe4cag L0W6dN1sfNflO9rlDNKgrXb64K7lVeXYwTc4zgaxrkNFpdtknn7VFCsCPah1i9ZM gejtPFEJg7GxtORMUeiiHrKZPtXxYmRvVPxDG0a8wJUlltAJLnW0dQg/mHW2XRYd MUciD282wvs= =q9D/ -----END PGP SIGNATURE-----