Description
Redmine before 4.0.9 and 4.1.x before 4.1.3 allows an attacker to learn the values of internal authentication keys by observing timing differences in string comparison operations within SysController and MailHandlerController.
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 | redmine | 5.0.0-1 | — |
| Debian 13 | redmine | 5.0.0-1 | — |
| Debian 12 | redmine | 5.0.0-1 | — |
| Debian 9 | redmine | 3.3.1-4+deb9u4 | DLA-2658-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | redmine | No fix yet | — |
| Ubuntu 18.04 LTS | redmine | No fix yet | — |
| Ubuntu 16.04 LTS | redmine | No fix yet | — |
Advisories 1
- DLA-2658-1 redmine - security update Debian Security (DSA / DLA) · Mar 9, 2026