========================================================================== Ubuntu Security Notice USN-4256-1 January 28, 2020
cyrus-sasl2 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM Summary: Cyrus SASL could be made to crash or execute arbitrary code if it received a specially crafted LDAP packet. Software Description: - cyrus-sasl2: Cyrus Simple Authentication and Security Layer Details: It was discovered that Cyrus SASL incorrectly handled certain LDAP packets. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10: libsasl2-2 2.1.27+dfsg-1ubuntu0.1 Ubuntu 18.04 LTS: libsasl2-2 2.1.27~101-g0780600+dfsg-3ubuntu2.1 Ubuntu 16.04 LTS: libsasl2-2 2.1.26.dfsg1-14ubuntu0.2 Ubuntu 14.04 ESM: libsasl2-2 2.1.25.dfsg1-17ubuntu0.1~esm1 Ubuntu 12.04 ESM: libsasl2-2 2.1.25.dfsg1-3ubuntu0.2 After a standard system update you need to restart services using SASL to effect the necessary changes. References: https://usn.ubuntu.com/4256-1 CVE-2019-19906 Package Information: https://launchpad.net/ubuntu/+source/cyrus-sasl2/2.1.27+dfsg-1ubuntu0.1 https://launchpad.net/ubuntu/+source/cyrus-sasl2/2.1.27~101-g0780600+dfsg-3ubuntu2.1 https://launchpad.net/ubuntu/+source/cyrus-sasl2/2.1.26.dfsg1-14ubuntu0.2
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