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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0080.2 NSS vulnerabilities 19 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libnss3 Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Unauthorised Access -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-12404 CVE-2018-12384 CVE-2018-0495 Reference: ESB-2019.0010 ESB-2018.3380 ESB-2018.1870 ESB-2018.1795 Original Bulletin: http://www.ubuntu.com/usn/usn-3850-1 http://www.ubuntu.com/usn/usn-3850-2 Comment: This bulletin contains two (2) advisories Revision History: February 19 2019: Added corresponding update for Ubuntu 12.04 ESM January 10 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3850-1: NSS vulnerabilities 9 January 2019 nss vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.10 o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS o Ubuntu 14.04 LTS Summary Several security issues were fixed in NSS. Software Description o nss - Network Security Service library Details Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A local attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495) It was discovered that NSS incorrectly handled certain v2-compatible ClientHello messages. A remote attacker could possibly use this issue to perform a replay attack. (CVE-2018-12384) It was discovered that NSS incorrectly handled certain padding oracles. A remote attacker could possibly use this issue to perform a variant of the Bleichenbacher attack. (CVE-2018-12404) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 libnss3 - 2:3.36.1-1ubuntu1.1 Ubuntu 18.04 LTS libnss3 - 2:3.35-2ubuntu2.1 Ubuntu 16.04 LTS libnss3 - 2:3.28.4-0ubuntu0.16.04.4 Ubuntu 14.04 LTS libnss3 - 2:3.28.4-0ubuntu0.14.04.4 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart any applications that use NSS, such as Evolution, to make all the necessary changes. References o CVE-2018-0495 o CVE-2018-12384 o CVE-2018-12404 (C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of Canonical Ltd. - -------------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3850-2 February 18, 2019 nss vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 12.04 ESM Summary: Several security issues were fixed in NSS. Software Description: - - nss: Network Security Service library Details: USN-3850-1 fixed several vulnerabilities in NSS. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details:  Keegan Ryan discovered that NSS incorrectly handled ECDSA key  generation. A local attacker could possibly use this issue to perform  a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)  It was discovered that NSS incorrectly handled certain v2-compatible  ClientHello messages. A remote attacker could possibly use this issue  to perform a replay attack. (CVE-2018-12384)  It was discovered that NSS incorrectly handled certain padding  oracles. A remote attacker could possibly use this issue to perform a  variant of the Bleichenbacher attack. (CVE-2018-12404) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM:  libnss3                         2:3.28.4-0ubuntu0.12.04.2 After a standard system update you need to restart any applications that use NSS, such as Evolution, to make all the necessary changes. References:  https://usn.ubuntu.com/usn/usn-3850-2  https://usn.ubuntu.com/usn/usn-3850-1  CVE-2018-0495, CVE-2018-12384, CVE-2018-12404 - --------------------------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. 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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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