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CORRECTION: Due to information unavailable at the time of writing, this ESB contains incorrect information.While this updated version of Winamp fixes some previously discovered vulnerabilities, the issue described in this ESB has not been fixed in this version. A workaround for this issue is available and should be implemented until an updated winamp version becomes available. WORKAROUND: Disassociate the .cda and .m3u file extensions from Winamp. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0744 -- Winamp Security Update Available New Winamp version fixes buffer overflow condition 26 November 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Winamp Publisher: Nullsoft Operating System: Windows Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated Original Bulletin: http://security-assessment.com/Papers/Winamp_IN_CDDA_Buffer_Overflow.pdf - --------------------------BEGIN INCLUDED TEXT-------------------- A remotely exploitable buffer overflow condition in IN_CDDA.dll which ships as part of the Winamp Package has been discovered in version 5.05. The vulnerability allows an attacker to execute code of their choice using a number of methods such as a malformed .m3u playlist. This vulnerability allows an attacker to host a malformed .m3u playlist on a web site, which when accessed, will be automatically downloaded and opened in winamp with no further user action required. Nullsoft have released version 5.06 of Winamp which is reported to fix this vulnerability. Users of Winamp are encouraged to upgrade to the latest version of Winamp. Brett Moore of Security-Assessment.com is credited with the discovery of this vulnerability. - --------------------------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 iQCVAwUBQaatpih9+71yA2DNAQJPJQP/ciEd5+FKsm71iiAiMngJanY/u+2uhxfP 0AQrGX+15CfP9eGmlAJceu2G2lByuu35jE3VaLxIf+I1FHAB3mZ/k3z26Y2GF0Na T/YUzmWNC6jVLnhZ8Kt1aclo8To+OwN3djtw9cOtkQ0Ckg4SSUA55CZlMTcdZZ0x u/u9eqQI8jk= =D3V3 -----END PGP SIGNATURE-----