vulnerability
Ubuntu: USN-4969-3: DHCP regression
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Jun 7, 2021 | Jun 8, 2021 | Feb 19, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Jun 7, 2021
Added
Jun 8, 2021
Modified
Feb 19, 2025
Description
USN-4969-1 fixed a vulnerability in DHCP. The package for Ubuntu 21.04 introduced a regression causing it to reject certain valid configuration files. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Jon Franklin and Pawel Wieczorkiewicz discovered that DHCP incorrectly handled lease file parsing. A remote attacker could possibly use this issue to cause DHCP to crash, resulting in a denial of service.
Solutions
ubuntu-upgrade-isc-dhcp-clientubuntu-upgrade-isc-dhcp-server
References
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.