========================================================================== Ubuntu Security Notice USN-3973-1 May 13, 2019
isc-dhcp vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.10 - Ubuntu 18.04 LTS Summary: DHCP could be made to crash if it received specially crafted network traffic. Software Description: - isc-dhcp: DHCP server and client Details: It was discovered that DHCP, when built with a mismatched external BIND library, incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause DHCP to crash, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: isc-dhcp-server 4.3.5-3ubuntu9.1 Ubuntu 18.04 LTS: isc-dhcp-server 4.3.5-3ubuntu7.1 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3973-1 CVE-2019-6470 Package Information: https://launchpad.net/ubuntu/+source/isc-dhcp/4.3.5-3ubuntu9.1 https://launchpad.net/ubuntu/+source/isc-dhcp/4.3.5-3ubuntu7.1
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