ALT-PU-2021-3312-1
Closed vulnerabilities
Published: 2021-09-17
BDU:2022-00593
Уязвимость криптографической библиотеки Libgcrypt, связанная с использованием слабых криптографических алгоритмов, позволяющая нарушителю получить доступ к конфиденциальной информации
Severity: MEDIUM (5.9)
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
References:
Published: 2021-09-06
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-40528
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.
Severity: MEDIUM (5.9)
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
References:
- https://eprint.iacr.org/2021/923
- https://eprint.iacr.org/2021/923
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=3462280f2e23e16adf3ed5176e0f2413d8861320
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=3462280f2e23e16adf3ed5176e0f2413d8861320
- https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1
- 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
- https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2
- GLSA-202210-13
- GLSA-202210-13