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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0591 -- OpenBSD Security Advisory OpenBSD 3.3: improper kernel bounds check 22 August 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: OpenBSD Operating System: OpenBSD 3.3 Impact: Denial of Service Access Required: Existing Account - --------------------------BEGIN INCLUDED TEXT-------------------- An improper bounds check in the semget(2) system call can allow a local user to cause a kernel panic. No privilege escalation is possible, the attack simply runs the kernel out of memory. The bug was introduced in OpenBSD 3.3, previous versions of OpenBSD are unaffected. The bug has been fixed in OpenBSD-current as well as the 3.3 stable branch. In addition, a patch is available for OpenBSD 3.3: ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.3/common/002_semget.patch Credit goes to blexim for finding and reporting the problem. - --------------------------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. 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 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 iQCVAwUBP0WYjCh9+71yA2DNAQET5wQAmjijIuElZwS9hs2mRgQ9ipDLK4mHLvPg gG1UKlNWaZxwnHOhs4OlHEL+60jDT+8o4toGzXaCeHpPSZ2gwIT7oMfoPtQPhVe6 +qRhNTg9YufEym7MfLK8t0FvS1BzDiO98Yn20WR5x3fS29EDjjltpL3cmxLdkNPt GnNaq0DmKGg= =Cdox -----END PGP SIGNATURE-----