CVE-2022-45142
Published: August 31, 2023Last modified: August 31, 2023
Description
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.
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 |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | 23 LTS | heimdal | Not affected (7.8.0-r1) |
Stream | heimdal | Not affected (7.8.0-r3) |