VDB
ALPINE-CVE-2021-40529
ALPINE-CVE-2021-40529
PUBLISHED
CVSS 5.900000095367432 MEDIUM
The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.
Risk Scores
CVSS v3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.17 | botan | 2.9.0-r1, 2.9.0-r0, 2.8.0-r0 |
| Alpine:v3.14 | botan | 2.11.0-r0, 2.11.0-r1, 2.11.0-r3 |
| Alpine:v3.19 | botan | 2.11.0-r0, 2.11.0-r1, 2.11.0-r3 |
| Alpine:v3.16 | botan | 2.9.0-r1, 2.9.0-r1, 0 |
| Alpine:v3.15 | botan | 2.11.0-r0, 2.11.0-r1, 2.11.0-r2 |
| Alpine:v3.18 | botan | 2.5.0-r0, 2.18.1-r1, 0 |
| Alpine:v3.20 | botan | 0, 2.11.0-r0, 2.11.0-r1 |
| Alpine:v3.21 | botan | 0, 2.9.0-r1, 2.9.0-r0 |
Timeline
- Sep 6, 2021 CVE Published
- Nov 19, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch