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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2346 Samba vulnerabilities 15 August 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: samba Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-10919 CVE-2018-10918 CVE-2018-10858 CVE-2018-1139 Reference: ESB-2018.2341 Original Bulletin: http://www.ubuntu.com/usn/usn-3738-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3738-1: Samba vulnerabilities 14 August 2018 samba vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS o Ubuntu 14.04 LTS Summary Several security issues were fixed in Samba. Software Description o samba - SMB/CIFS file, print, and login server for Unix Details Svyatoslav Phirsov discovered that the Samba libsmbclient library incorrectly handled extra long filenames. A malicious server could use this issue to cause Samba to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-10858) Volker Mauel discovered that Samba incorrectly handled database output. When used as an Active Directory Domain Controller, a remote authenticated attacker could use this issue to cause Samba to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-10918) Phillip Kuhrt discovered that the Samba LDAP server incorrectly handled certain confidential attribute values. A remote authenticated attacker could possibly use this issue to obtain certain sensitive information. (CVE-2018-10919) Vivek Das discovered that Samba incorrectly handled NTLMv1 being explicitly disabled on the server. A remote user could possibly be authenticated using NTLMv1, contrary to expectations. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-1139) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS libsmbclient - 2:4.7.6+dfsg~ubuntu-0ubuntu2.2 samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.2 Ubuntu 16.04 LTS libsmbclient - 2:4.3.11+dfsg-0ubuntu0.16.04.15 samba - 2:4.3.11+dfsg-0ubuntu0.16.04.15 Ubuntu 14.04 LTS libsmbclient - 2:4.3.11+dfsg-0ubuntu0.14.04.16 samba - 2:4.3.11+dfsg-0ubuntu0.14.04.16 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 CVE-2018-10858 o CVE-2018-10918 o CVE-2018-10919 o CVE-2018-1139 (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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBW3OCjWaOgq3Tt24GAQhhTA/+I47bFcckOaNrI70lv/a4Q1XgNJfks1vx NquI2uSd8Ay6aLXl6AjlmU5uReUj2jXo+7HowYCZj7PbH8knrBAN4ZcbfSdy4U3P 9FZpovWmJvmBWSiyBn3hsZYTPXdxReeak9kLefk6tRHifqR3qQ7Grl/ieVgoF3h5 aPnoNRINc14TIVLqkJOZHnJE6tVkRuad7gHeQH5gpqCaUgY5cWwJdMPWjY6YfjK1 dqts5TYucsDV4m6nU6ikc/rqqDbk6/A4CImxKPPAO7AG2xelYcJtpKRG9HTBxkt3 Od9naKgUZVk+Gh+Odgwnm29zb7wMl/pdckoIB8QcZh3KmiL/j+7y63qD30gAEPP2 OLntQjXmAdFRrta3a/BbHubU+SB5/eUSBUKdaCWoXk2u/SqQL9N/EwJWHSSST2Me Nn/n4zqMtorU2VTE/F3jsbU9cFWBEG1RV7kQW8UM0Om8z7WKPj5GmcVZVHK2BaK+ Fe/qW3VG/B6fxN7jFLbejNNR99bsO1hEhSaUCez9o3oZcIR+tsjEFj3aWuzpaKti AlTQTFf1J+y5SHCPM7roo0V/uKw/bAL+A+h0D1V1IkdP18T8zBcHlkfBtf4Nqvqb qyDSCxi8xAD+HQnWt26q/31SYHTZJT9tb3+jU8j6PAI56AOphQMK1qCsIDBvpUHM IgSZ4MrCktM= =mMdt -----END PGP SIGNATURE-----