CVE-2022-38178

Publication date 21 September 2022

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

7.5 · High

Score breakdown

By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

Read the notes from the security team

Status

Package Ubuntu Release Status
bind9 22.10 kinetic
Fixed 1:9.18.4-2ubuntu2
22.04 LTS jammy
Fixed 1:9.18.1-1ubuntu1.2
20.04 LTS focal
Fixed 1:9.16.1-0ubuntu2.11
18.04 LTS bionic
Fixed 1:9.11.3+dfsg-1ubuntu1.18
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
isc-dhcp 22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes


alexmurray

As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs


leosilva

versions affected: 9.9.12 - 9.9.13, 9.10.7 - 9.10.8, 9.18.0 - 9.18.6, 9.19.0 - 9.19.4.

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5626-1
    • Bind vulnerabilities
    • 21 September 2022

Other references