Description
The transit path validation code in Heimdal before 7.3 might allow attackers to bypass the capath policy protection mechanism by leveraging failure to add the previous hop realm to the transit path of issued tickets.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | heimdal | 7.1.0+dfsg-12 | — |
| Debian 13 | heimdal | 7.1.0+dfsg-12 | — |
| Debian 12 | heimdal | 7.1.0+dfsg-12 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | heimdal | No fix yet | — |
| Ubuntu Pro 14.04 LTS | heimdal | No fix yet | — |