Description
The Miller-Rabin primality check in Botan before 1.10.8 and 1.11.x before 1.11.9 improperly uses a single random base, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a DH group.
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 7 | botan1.10 | 1.10.5-1+deb7u1 | DLA-449-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | botan1.10 | 1.10.5-1+deb7u1ubuntu0.14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | Botan | 1.10.9-3.1 | SUSE-SU-2017:1222-1 |
| SLES 12 SP1 | Botan | 1.10.9-3.1 | SUSE-SU-2017:1222-1 |
Advisories 2
- DLA-449-1 botan1.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1222-1 Security update for Botan SUSE / openSUSE Security Updates · Feb 4, 2026