========================================================================== Ubuntu Security Notice USN-5741-1 November 24, 2022
exim4 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Exim could be made to crash or run programs if it processed specially crafted regular expressions. Software Description: - exim4: Exim is a mail transport agent Details: It was discovered that Exim incorrectly handled certain regular expressions. An 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 22.10: exim4-base 4.96-3ubuntu1.1 exim4-daemon-heavy 4.96-3ubuntu1.1 exim4-daemon-light 4.96-3ubuntu1.1 Ubuntu 22.04 LTS: exim4-base 4.95-4ubuntu2.2 exim4-daemon-heavy 4.95-4ubuntu2.2 exim4-daemon-light 4.95-4ubuntu2.2 Ubuntu 20.04 LTS: exim4-base 4.93-13ubuntu1.7 exim4-daemon-heavy 4.93-13ubuntu1.7 exim4-daemon-light 4.93-13ubuntu1.7 Ubuntu 18.04 LTS: exim4-base 4.90.1-1ubuntu1.10 exim4-daemon-heavy 4.90.1-1ubuntu1.10 exim4-daemon-light 4.90.1-1ubuntu1.10 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5741-1 CVE-2022-3559 Package Information: https://launchpad.net/ubuntu/+source/exim4/4.96-3ubuntu1.1 https://launchpad.net/ubuntu/+source/exim4/4.95-4ubuntu2.2 https://launchpad.net/ubuntu/+source/exim4/4.93-13ubuntu1.7 https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.10
OpenPGP_signature
Description: OpenPGP digital signature
