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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3683 Samba vulnerabilities 28 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: samba Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-16851 CVE-2018-16841 CVE-2018-14629 Original Bulletin: http://www.ubuntu.com/usn/usn-3827-1 http://www.ubuntu.com/usn/usn-3827-2 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. This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3827-1 November 27, 2018 samba vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.10 - - Ubuntu 18.04 LTS - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Samba. Software Description: - - samba: SMB/CIFS file, print, and login server for Unix Details: Florian Stuelpner discovered that Samba incorrectly handled CNAME records. A remote attacker could use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-14629) Alex MacCuish discovered that Samba incorrectly handled memory when configured to accept smart-card authentication. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-16841) Garming Sam discovered that Samba incorrectly handled memory when processing LDAP searches. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-16851) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: samba 2:4.8.4+dfsg-2ubuntu2.1 Ubuntu 18.04 LTS: samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.5 Ubuntu 16.04 LTS: samba 2:4.3.11+dfsg-0ubuntu0.16.04.18 Ubuntu 14.04 LTS: samba 2:4.3.11+dfsg-0ubuntu0.14.04.19 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3827-1 CVE-2018-14629, CVE-2018-16841, CVE-2018-16851 Package Information: https://launchpad.net/ubuntu/+source/samba/2:4.8.4+dfsg-2ubuntu2.1 https://launchpad.net/ubuntu/+source/samba/2:4.7.6+dfsg~ubuntu-0ubuntu2.5 https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.18 https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.19 ========================================================================== Ubuntu Security Notice USN-3827-2 November 27, 2018 samba vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 12.04 ESM Summary: Several security issues were fixed in Samba. Software Description: - - samba: SMB/CIFS file, print, and login server for Unix Details: USN-3827-1 fixed a vulnerability in samba. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: Florian Stuelpner discovered that Samba incorrectly handled CNAME records. A remote attacker could use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-14629) Alex MacCuish discovered that Samba incorrectly handled memory when configured to accept smart-card authentication. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-16841) Garming Sam discovered that Samba incorrectly handled memory when processing LDAP searches. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-16851) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM samba - 2:3.6.25-0ubuntu0.12.04.16 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References o USN-3827-1 o CVE-2018-14629 o CVE-2018-16841 o CVE-2018-16851 (C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of Canonical Ltd. - --------------------------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: https://www.auscert.org.au/bulletins/ =========================================================================== 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). 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