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
Link | Resource |
---|---|
https://eprint.iacr.org/2021/923 | Technical Description Third Party Advisory |
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 | Third Party Advisory |
https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2 | Exploit Third Party Advisory |
https://security.gentoo.org/glsa/202210-13 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-09-06T00:00:00
Updated: 2022-10-31T00:00:00
Reserved: 2021-09-06T00:00:00
Link: CVE-2021-40528
JSON object: View
NVD Information
Status : Modified
Published: 2021-09-06T19:15:07.587
Modified: 2023-11-07T03:38:36.610
Link: CVE-2021-40528
JSON object: View
Redhat Information
No data.
CWE