Several vulnerabilities have been discovered in the ISC DHCP client, relay and server. CVE-2022-2928 It was discovered that the DHCP server does not correctly perform option reference counting when configured with "allow leasequery;". A remote attacker can take advantage of this flaw to cause a denial of service (daemon crash). CVE-2022-2929 It was discovered that the DHCP server is prone to a memory leak flaw when handling contents of option 81 (fqdn) data received in a DHCP packet. A remote attacker can take advantage of this flaw to cause DHCP servers to consume resources, resulting in denial of service. For the stable distribution (bullseye), these problems have been fixed in version 4.4.1-2.3+deb11u1. We recommend that you upgrade your isc-dhcp packages. For the detailed security status of isc-dhcp please refer to its security tracker page at: https://security-tracker.debian.org/tracker/isc-dhcp
Several vulnerabilities have been discovered in the ISC DHCP client, relay and server.
It was discovered that the DHCP server does not correctly perform option reference counting when configured with "allow leasequery;". A remote attacker can take advantage of this flaw to cause a denial of service (daemon crash).
It was discovered that the DHCP server is prone to a memory leak flaw when handling contents of option 81 (fqdn) data received in a DHCP packet. A remote attacker can take advantage of this flaw to cause DHCP servers to consume resources, resulting in denial of service.
For the stable distribution (bullseye), these problems have been fixed in version 4.4.1-2.3+deb11u1.
We recommend that you upgrade your isc-dhcp packages.
For the detailed security status of isc-dhcp please refer to its security tracker page at: https://security-tracker.debian.org/tracker/isc-dhcp
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