CVE-2022-45142
Published: 8 February 2023
The fix for CVE-2022-3437 included changing memcmp to be constant time and a workaround for a compiler bug by adding "!= 0" comparisons to the result of memcmp. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0 branches (and possibly other branches) a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted.
Notes
Author | Note |
---|---|
mdeslaur | introduced in fix for CVE-2022-3437 |
rodrigo-zaiden | heimdal master branch not affected, only backports. |
Priority
Status
Package | Release | Status |
---|---|---|
heimdal Launchpad, Ubuntu, Debian |
bionic |
Released
(7.5.0+dfsg-1ubuntu0.4)
|
focal |
Released
(7.7.0+dfsg-1ubuntu1.4)
|
|
jammy |
Needs triage
|
|
kinetic |
Needs triage
|
|
trusty |
Released
(1.6~git20131207+dfsg-1ubuntu1.2+esm4)
|
|
upstream |
Needs triage
|
|
xenial |
Released
(1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm4)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |