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USN-4237-1: SpamAssassin vulnerabilities spamassassin vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 19.04 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Summary Several security issues were fixed in SpamAssassin. Software Description spamassassin – Perl-based spam filter using text analysis Details It was discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were tricked into using a specially-crafted CF file, a remote attacker could possibly run arbitrary code. (CVE-2018-11805) It was discovered that SpamAssassin incorrectly handled certain messages. A remote attacker could possibly use this issue to cause SpamAssassin to consume resources, resulting in a denial of service. (CVE-2019-12420) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 spamassassin – 3.4.2-1ubuntu0.19.10.1 Ubuntu 19.04 spamassassin – 3.4.2-1ubuntu0.19.04.1 Ubuntu 18.04 LTS spamassassin – 3.4.2-0ubuntu0.18.04.2 [ more… ]

USN-4236-1: Libgcrypt vulnerability libgcrypt20 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 19.04 Ubuntu 18.04 LTS Summary Libgcrypt could be made to expose sensitive information. Software Description libgcrypt20 – LGPL Crypto library Details It was discovered that Libgcrypt was susceptible to a ECDSA timing attack. An attacker could possibly use this attack to recover sensitive information. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 libgcrypt20 – 1.8.4-5ubuntu2.1 Ubuntu 19.04 libgcrypt20 – 1.8.4-3ubuntu1.1 Ubuntu 18.04 LTS libgcrypt20 – 1.8.1-4ubuntu1.2 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 CVE-2019-13627 Source: USN-4236-1: Libgcrypt vulnerability

USN-4235-1: nginx vulnerability nginx vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 19.04 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Summary nginx could be made to expose sensitive information over the network. Software Description nginx – small, powerful, scalable web/proxy server Details Bert JW Regeer and Francisco Oca Gonzalez discovered that nginx incorrectly handled certain error_page configurations. A remote attacker could possibly use this issue to perform HTTP request smuggling attacks and access resources contrary to expectations. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 nginx-common – 1.16.1-0ubuntu2.1 nginx-core – 1.16.1-0ubuntu2.1 nginx-extras – 1.16.1-0ubuntu2.1 nginx-full – 1.16.1-0ubuntu2.1 nginx-light – 1.16.1-0ubuntu2.1 Ubuntu 19.04 nginx-common – 1.15.9-0ubuntu1.2 nginx-core – 1.15.9-0ubuntu1.2 nginx-extras – 1.15.9-0ubuntu1.2 nginx-full – 1.15.9-0ubuntu1.2 nginx-light – 1.15.9-0ubuntu1.2 Ubuntu 18.04 LTS nginx-common – 1.14.0-0ubuntu1.7 nginx-core [ more… ]