Description
An issue was discovered in Znuny through 6.5.14 and 7.x through 7.1.6. Custom AJAX calls to the AgentPreferences UpdateAJAX subaction can be used to set user preferences with arbitrary keys. When fetching user data via GetUserData, these keys and values are retrieved and given as a whole to other function calls, which then might use these keys/values to affect permissions or other settings.
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 | znuny | 6.5.15-2 | — |
| Debian 13 | znuny | 6.5.15-2 | — |
| Debian 12 | znuny | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | znuny | No fix yet | — |
| Ubuntu 26.04 LTS | znuny | No fix yet | — |
| Ubuntu 25.10 | znuny | No fix yet | — |
| Ubuntu 24.04 LTS | znuny | No fix yet | — |