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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1795 Libgcrypt vulnerability 20 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libgcrypt Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-0495 Reference: ESB-2018.1780 ESB-2018.1766 Original Bulletin: http://www.ubuntu.com/usn/usn-3689-1 http://www.ubuntu.com/usn/usn-3689-2 Comment: This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3689-1 June 19, 2018 libgcrypt11, libgcrypt20 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.04 LTS - - Ubuntu 17.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Libgcrypt could be made to expose sensitive information. Software Description: - - libgcrypt20: LGPL Crypto library - - libgcrypt11: LGPL Crypto library Details: Keegan Ryan discovered that Libgcrypt was susceptible to a side-channel attack. A local attacker could possibly use this attack to recover ECDSA private keys. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: libgcrypt20 1.8.1-4ubuntu1.1 Ubuntu 17.10: libgcrypt20 1.7.8-2ubuntu1.1 Ubuntu 16.04 LTS: libgcrypt20 1.6.5-2ubuntu0.5 Ubuntu 14.04 LTS: libgcrypt11 1.5.3-2ubuntu4.6 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3689-1 CVE-2018-0495 Package Information: https://launchpad.net/ubuntu/+source/libgcrypt20/1.8.1-4ubuntu1.1 https://launchpad.net/ubuntu/+source/libgcrypt20/1.7.8-2ubuntu1.1 https://launchpad.net/ubuntu/+source/libgcrypt20/1.6.5-2ubuntu0.5 https://launchpad.net/ubuntu/+source/libgcrypt11/1.5.3-2ubuntu4.6 - ---------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3689-2 June 19, 2018 libgcrypt11 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 12.04 ESM Summary: Libgcrypt could be made to expose sensitive information. Software Description: - - libgcrypt11: LGPL Crypto library Details: USN-3689-1 fixed a vulnerability in Libgcrypt. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details:  Keegan Ryan discovered that Libgcrypt was susceptible to a side-  channel attack. A local attacker could possibly use this attack to  recover ECDSA private keys. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM:  libgcrypt11                     1.5.0-3ubuntu0.8 In general, a standard system update will make all the necessary changes. References:  https://usn.ubuntu.com/usn/usn-3689-2  https://usn.ubuntu.com/usn/usn-3689-1  CVE-2018-0495 - --------------------------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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWymjXWaOgq3Tt24GAQjd6w//XtDhPW2Mk3u7tEldlS/wMv6Ez73HB7eE GIQtiCAvcGoU4IiVeEZOkVfYyNld1eQ01xoCkQRzIHtudlChw1BReHIKkBG3FQb9 0PwDRp3otWS42CJIj2K2UCcGx6Oul7rebKMpHYAqnqKgNvaQwIdm0SGtrP126hh4 l+bnhSVPkKiNqFod8ExIXDjwUMew+5VWZMxwqquUZzpoxCIDmSK5lLlty/yp3pFh WkEyH69BuUFG60Kb8NNeJHuBoEctUozL4muNWuiYn4cv9XvQQadhrFye/dC+60g2 dm+FMujmPHIwk9IPxL0MRoRqa8arWY/2SYTMB2XmRJEyWq66numHVNVgz3ZfHft7 S5IC4DhFB56fCC0F1Jxdf4LXqPZtGJoDGXX3I9/SMdYj8daWOk+ShqGJLhfinXUg BkHst7+mjlzuZbBmDTcJZtzXnODZ7+eHP/6IYgRV4SrghMRtQDd7I8OEcFByRnFY kgzhKNDQfvt4hAgyksuxqFzK0njHTOSC2zZP0FkPpkiRtBLxkTyFsuHNiNE+LQrX M0UuNhbYdl7mRZq4HbNpXAuwQm8G8RaHlAqwahkNd4ulZ8Kk4uGBLZCLq4VEmYlv TQUMFPtkhezPjHoF2cBr2W9UBSrKQi+//tP4gI1DUZaFzEIuOH1VZm+XxqWiSFCs DOSaQPUOT9k= =niuC -----END PGP SIGNATURE-----