14 August 2017
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2016 Subversion vulnerabilities 14 August 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libsvn1 Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Unauthorised Access -- Remote/Unauthenticated Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-9800 CVE-2016-8734 CVE-2016-2167 Reference: ESB-2017.1985 ESB-2016.2825 ESB-2016.1051 ESB-2016.1050 Original Bulletin: http://www.ubuntu.com/usn/usn-3388-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3388-1 August 11, 2017 subversion vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.04 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Subversion. Software Description: - - subversion: Advanced version control system Details: Joern Schneeweisz discovered that Subversion did not properly handle host names in 'svn+ssh://' URLs. A remote attacker could use this to construct a subversion repository that when accessed could run arbitrary code with the privileges of the user. (CVE-2017-9800) Daniel Shahaf and James McCoy discovered that Subversion did not properly verify realms when using Cyrus SASL authentication. A remote attacker could use this to possibly bypass intended access restrictions. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-2167) Florian Weimer discovered that Subversion clients did not properly restrict XML entity expansion when accessing http(s):// URLs. A remote attacker could use this to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-8734) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.04: libsvn1 1.9.5-1ubuntu1.1 subversion 1.9.5-1ubuntu1.1 Ubuntu 16.04 LTS: libapache2-mod-svn 1.9.3-2ubuntu1.1 libapache2-svn 1.9.3-2ubuntu1.1 libsvn1 1.9.3-2ubuntu1.1 subversion 1.9.3-2ubuntu1.1 Ubuntu 14.04 LTS: libapache2-mod-svn 1.8.8-1ubuntu3.3 libapache2-svn 1.8.8-1ubuntu3.3 libsvn1 1.8.8-1ubuntu3.3 subversion 1.8.8-1ubuntu3.3 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3388-1 CVE-2016-2167, CVE-2016-8734, CVE-2017-9800 Package Information: https://launchpad.net/ubuntu/+source/subversion/1.9.5-1ubuntu1.1 https://launchpad.net/ubuntu/+source/subversion/1.9.3-2ubuntu1.1 https://launchpad.net/ubuntu/+source/subversion/1.8.8-1ubuntu3.3 - --------------------------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 email@example.com 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. 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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 iQIVAwUBWZEO+4x+lLeg9Ub1AQgLGA//aXpanTsTRxVXuygaRzTymR1hM3XsKwFR 2DysaqhxLcpzvhasPH/9Q4r6dtQXa1kJuoTl+DDcc6ASj0Q/GzRc33cZLsdlkPor z4bBeZG/FUXx/6NhCQUuIh4nVz3oDOPfLjb0kuTj/MayZQJu0zepIfo9gQoAAPsW +UAiivSKYCoZPSbEhZM3lLUAz/R6V0+QJU74rz5PT+GHDnb5+7mPu+q7AbOamRUP 1iglJC5FEyv+ljcrbRQiZuhJgL5IyH3M5XHYEr6U/A6KBUVqcnftGLI5D4MQ0e1l 1NaHnXSsPh+guGwi4PQEExu2VlrbrUdJaUBO+EHvGviGyi8Z3blGmI0Z5SJFWT0j +KoX7AwcFpRqEg2hcYSeebqRlh7UvFGSbGGIiiAha6o4RBra//KMwve9a6OYmXK0 UOLi9Lj472kifiodxeWJhjozSLisLFvrt5RD+K7u0mM1PqQETfYN/vWC0hWV3PU3 fslCiMgMaial68XixJjpm8DLVbOSTV3dvNMOh4vedh07CfleyteTLY9bW/UOZWni Xe3XAhqKzGYtlciThSmlC6fDAeVQ19pnL7bGrAWPSB2N8/HiCvb0nuCEe/1pKbbK 3HKa3wG9kYqQmXRV8jwTxT0z/sUvtUa9GL/g9KK41QglTXpyuTEHgTx9JO7OhO3H IUn0cr3BUGI= =Nue+ -----END PGP SIGNATURE-----