Published:
16 December 2003
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0855 -- Ethereal Security Advisory Security problems in Ethereal 0.9.16 16 December 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ethereal 0.9.16 and prior Publisher: NS Computer Software and Services P/L Impact: Denial of Service Execute Arbitrary Code/Commands Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- Name: Security problems in Ethereal 0.9.16 Docid: enpa-sa-00012 Date: December 12, 2003 Severity: High DETAILS Description: Serious issues have been discovered in the following protocol dissectors: o Selecting "Match->Selected" or "Prepare->Selected" for a malformed SMB packet could cause a segmentation fault. o It is possible for the Q.931 dissector to dereference a null pointer when reading a malformed packet. Impact: Both vulnerabilities will make the Ethereal application crash. The Q.931 vulnerability also affects Tethereal. It is not known if either vulnerability can be used to make Ethereal or Tethereal run arbitrary code. Resolution: Upgrade to 0.10.0. If you are running a version prior to 0.10.0 and you cannot upgrade, you can disable the SMB and Q.931 protocol dissectors by selecting Edit->Protocols... and deselecting them from the list. - --------------------------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 iQCVAwUBP95aySh9+71yA2DNAQG1FQP9GsWUvU+FSxVhU3p4L7q+iD6mX4CJqDjQ ZvMrdQhoB/JiuF/UsJXWVdr/eT4a8Pl1kJShDVL022g6IjK8jJagOvxbWN7k/CkK KqypCpML8dyX4j+ejkUcRmysJbY3KFDYWpuzdTfIBa2uLQa7F6byxxFZMygS5B90 DCCd7vlufmM= =tzCs -----END PGP SIGNATURE-----