14 June 2017
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1480 GnuTLS vulnerabilities 14 June 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libgnutls30 Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-7869 CVE-2017-7507 CVE-2017-750 Original Bulletin: http://www.ubuntu.com/usn/usn-3318-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running libgnutls30 check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3318-1 June 13, 2017 gnutls26, gnutls28 vulnerabilities ========================================================================== 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: Several security issues were fixed in GnuTLS. Software Description: - - gnutls28: GNU TLS library - - gnutls26: GNU TLS library Details: Hubert Kario discovered that GnuTLS incorrectly handled decoding a status response TLS extension. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-7507) It was discovered that GnuTLS incorrectly handled decoding certain OpenPGP certificates. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-7869) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.04: libgnutls30 3.5.6-4ubuntu4.1 Ubuntu 16.10: libgnutls30 3.5.3-5ubuntu1.2 Ubuntu 16.04 LTS: libgnutls30 3.4.10-4ubuntu1.3 Ubuntu 14.04 LTS: libgnutls26 2.12.23-12ubuntu2.8 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3318-1 CVE-2017-7507, CVE-2017-7869 Package Information: https://launchpad.net/ubuntu/+source/gnutls28/3.5.6-4ubuntu4.1 https://launchpad.net/ubuntu/+source/gnutls28/3.5.3-5ubuntu1.2 https://launchpad.net/ubuntu/+source/gnutls28/3.4.10-4ubuntu1.3 https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12ubuntu2.8 - --------------------------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. 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