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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1682 Samba vulnerability 6 July 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: samba Publisher: Ubuntu Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-9461 Original Bulletin: http://www.ubuntu.com/usn/usn-3348-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running samba check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3348-1 July 05, 2017 samba vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.04 - - Ubuntu 16.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Samba could be made to hang if it received specially crafted network traffic. Software Description: - - samba: SMB/CIFS file, print, and login server for Unix Details: It was discovered that Samba incorrectly handled dangling symlinks. A remote attacker could possibly use this issue to cause Samba to hang, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-9461) In addition, this update fixes a regression introduced by USN-3267-1 that caused Samba to incorrectly handle non-wide symlinks to directories. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.04: samba 2:4.5.8+dfsg-0ubuntu0.17.04.3 Ubuntu 16.10: samba 2:4.4.5+dfsg-2ubuntu5.7 Ubuntu 16.04 LTS: samba 2:4.3.11+dfsg-0ubuntu0.16.04.8 Ubuntu 14.04 LTS: samba 2:4.3.11+dfsg-0ubuntu0.14.04.9 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3348-1 CVE-2017-9461 Package Information: https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.3 https://launchpad.net/ubuntu/+source/samba/2:4.4.5+dfsg-2ubuntu5.7 https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.8 https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.9 - --------------------------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 =========================================================================== 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 iQIVAwUBWV10Oox+lLeg9Ub1AQheLg//ZAbIl0VC6n8lTPKKcOzEfBREUnqJG7jM Hze0A6gDjBqE5n37/7dsRfIdQfC8Lvs/TH1sXFO5vXEa3VOJYUb8kbfeLIia/D0H wBTVL4pUcX0oxjRlCLJv4lUgLkfII/itkuX1C1jCVpXSMMc8idLKSfjaWu0WaVIj 30Qt4N7T4xbFiV10rvPZE6mguqMEyv/WWdRcqVkQ4X+Qa7BhGjYHsk3LoUDN9Se8 DazL1yHk5CE4lYr9bZerERnxQ8yo1kDcB3ufs4hyc9hdEVfzEnIPHX0I6jNGr/Nv IWj9rLwR2sROh6deOY9TUa/+wseC7LTpRxtTaZEKCVTerO0BRMS/EkA5Jy1VzSQW /xOtyBaUcaUJFVMW9E85y37YOLNPrqgzAW7Ej2+IkamWxfQCOTSVYxRld3X0zXbs kv+ZPRgC0SB12/aNoWb01Y7vb5E4QPPZ/OtIwKeQznRZCpMMkbfj6Or42yaWOALT Ej1FHX2atTDWoShH6VLizwkijg1unsu6vPy5Gev9icXGeaxAUK3YSN7mwoQ/pbCM XskHMxN5iPWEZxre4y1l46iiuZFXWa8iIKwGKwQ5smhf8sXFfdjcf1yPbb8BQFag GIiXORJzV8WAFq3dMw5uXPKZhNNqzDOU33VET1WG15b+Awbj7EhAE5aDDDFMBgSo gve/7E03z1c= =NeA4 -----END PGP SIGNATURE-----