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 |