CVE-2021-25214

Publication date 28 April 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
bind9	24.04 LTS noble	Fixed 1:9.16.8-1ubuntu3.1
	23.10 mantic	Fixed 1:9.16.8-1ubuntu3.1
	23.04 lunar	Fixed 1:9.16.8-1ubuntu3.1
	22.10 kinetic	Fixed 1:9.16.8-1ubuntu3.1
	22.04 LTS jammy	Fixed 1:9.16.8-1ubuntu3.1
	21.10 impish	Fixed 1:9.16.8-1ubuntu3.1
	21.04 hirsute	Fixed 1:9.16.8-1ubuntu3.1
	20.10 groovy	Fixed 1:9.16.6-3ubuntu1.2
	20.04 LTS focal	Fixed 1:9.16.1-0ubuntu2.8
	18.04 LTS bionic	Fixed 1:9.11.3+dfsg-1ubuntu1.15
	16.04 LTS xenial	Fixed 1:9.10.3.dfsg.P4-8ubuntu1.19
	14.04 LTS trusty	Vulnerable

Notes

mdeslaur

affects 9.8.5+

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4929-1
Bind vulnerabilities
29 April 2021