========================================================================== Ubuntu Security Notice USN-3493-1 November 27, 2017
exim4 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 17.10 - Ubuntu 17.04 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 memory in the ESMTP CHUNKING extension. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code. The default compiler options for affected releases should reduce the vulnerability to a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: exim4-daemon-heavy 4.89-5ubuntu1.1 exim4-daemon-light 4.89-5ubuntu1.1 Ubuntu 17.04: exim4-daemon-heavy 4.88-5ubuntu1.2 exim4-daemon-light 4.88-5ubuntu1.2 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3493-1 CVE-2017-16943 Package Information: https://launchpad.net/ubuntu/+source/exim4/4.89-5ubuntu1.1 https://launchpad.net/ubuntu/+source/exim4/4.88-5ubuntu1.2
signature.asc
Description: OpenPGP digital signature
-- ubuntu-security-announce mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce
