USN-5658-1: DHCP vulnerabilities
5 October 2022
Several security issues were fixed in DHCP.
Releases
Packages
- isc-dhcp - DHCP server and client
Details
It was discovered that DHCP incorrectly handled option reference counting.
A remote attacker could possibly use this issue to cause DHCP servers to
crash, resulting in a denial of service. (CVE-2022-2928)
It was discovered that DHCP incorrectly handled certain memory operations.
A remote attacker could possibly use this issue to cause DHCP clients and
servers to consume resources, leading to a denial of service.
(CVE-2022-2929)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5658-2: isc-dhcp-client-ddns, isc-dhcp-dev, isc-dhcp-relay, isc-dhcp-client, isc-dhcp, isc-dhcp-server-ldap, isc-dhcp-common, isc-dhcp-server
- USN-5658-3: isc-dhcp-dev, isc-dhcp-client-noddns, isc-dhcp-relay, isc-dhcp-client, isc-dhcp, isc-dhcp-server-ldap, isc-dhcp-common, isc-dhcp-server