CVE-2021-40529
conan/botan
Use of a Broken or Risky Cryptographic Algorithm
The ElGamal implementation in Botan, 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.
All versions up to 2.18.1
Upgrade to version 2.18.2 or above.
2021-09-16
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