========================================================================== Ubuntu Security Notice USN-4141-1 September 28, 2019 exim4 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.04 Summary: Exim could be made to crash or run programs if it received specially crafted network traffic. Software Description: - exim4: Exim is a mail transport agent Details: It was discovered that Exim incorrectly handled certain string operations. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: exim4-daemon-heavy 4.92-4ubuntu1.4 exim4-daemon-light 4.92-4ubuntu1.4 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4141-1 CVE-2019-16928 Package Information: https://launchpad.net/ubuntu/+source/exim4/4.92-4ubuntu1.4