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The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a cert...
CVE-2021-40528
First seen on SecPulse
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2021-40528 libgcrypt Fixed in: 1.8.8-r1
- BellSoft Alpaquita BELL-CVE-2021-40528
- Debian DEBIAN-CVE-2021-40528 libgcrypt20 Fixed in: 1.8.7-6
Original description The description as published by the source.
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.
References
- advisory eprint.iacr.org
- advisory ibm.github.io
- advisory security.gentoo.org
- report ibm.github.io
- web git.gnupg.org