Security Advisory
CVE-2021-40528
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receivers public key, the generator defined by the receivers public key, and the senders ephemeral exponents can lead to a cross-configuration attack against OpenPGP.