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.
Created botan tracking bugs for this issue:
Affects: epel-7 [bug 2002828]
Affects: fedora-all [bug 2002826]
Created botan2 tracking bugs for this issue:
Affects: epel-8 [bug 2002829]
Affects: fedora-all [bug 2002827]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.