CVE-2021-40528 (https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1, https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2)
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 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.
Please stabilize 1.9.4.
GLSA request filed
The bug has been referenced in the following commit(s):
Author: GLSAMaker <email@example.com>
AuthorDate: 2022-10-31 01:09:53 +0000
Commit: John Helmert III <firstname.lastname@example.org>
CommitDate: 2022-10-31 01:40:14 +0000
[ GLSA 202210-13 ] libgcrypt: Multiple Vulnerabilities
Signed-off-by: GLSAMaker <email@example.com>
Signed-off-by: John Helmert III <firstname.lastname@example.org>
glsa-202210-13.xml | 45 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
GLSA released, all done!