The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, 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://github.com/randombit/botan/pull/2790 | Patch Third Party Advisory |
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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/72NB4OLD3VHJC3YF3PEP2HKF6BYURPAO/ | |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPHGYWNJQKWLTUWBNSFB4F66MQDIL3IB/ | |
https://security.gentoo.org/glsa/202208-14 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-09-06T18:45:08
Updated: 2022-08-10T05:13:35
Reserved: 2021-09-06T00:00:00
Link: CVE-2021-40529
JSON object: View
NVD Information
Status : Modified
Published: 2021-09-06T19:15:07.630
Modified: 2023-11-07T03:38:36.703
Link: CVE-2021-40529
JSON object: View
Redhat Information
No data.
CWE