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ubuntuUbuntuUSN-4969-3
HistoryJun 07, 2021 - 12:00 a.m.

DHCP regression

2021-06-0700:00:00
ubuntu.com
80

7.4 High

AI Score

Confidence

High

Releases

  • Ubuntu 21.04

Packages

  • isc-dhcp - DHCP server and client

Details

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.

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7.4 High

AI Score

Confidence

High