未評価
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a cert...
CVE-2021-40528
SecPulse初出
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Alpine Linux ALPINE-CVE-2021-40528 libgcrypt 修正版: 1.8.8-r1
- BellSoft Alpaquita BELL-CVE-2021-40528
- Debian DEBIAN-CVE-2021-40528 libgcrypt20 修正版: 1.8.7-6
原文の説明 取得元が公開している説明をそのまま載せています (多くは英語)。
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.
参照URL
- advisory eprint.iacr.org
- advisory ibm.github.io
- advisory security.gentoo.org
- report ibm.github.io
- web git.gnupg.org