Description
OpenTTD before 1.1.5 contains a Denial of Service (slow read attack) that prevents users from joining the server.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| openttd | openttd | 1.1.5 | — |
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 | openttd | 1.1.5-1 | — |
| Debian 13 | openttd | 1.1.5-1 | — |
| Debian 12 | openttd | 1.1.5-1 | — |
| Debian 6.0 | openttd | 1.0.4-6 | DSA-2524-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openttd | 1.6.1-1.1 | openSUSE-SU-2024:10563-1 |
Advisories 2
- DSA-2524-1 openttd - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10563-1 openttd-1.6.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026