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
Configurations
History
21 Nov 2024, 06:24
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://eprint.iacr.org/2021/923 - Technical Description, Third Party Advisory | |
| References | () https://github.com/randombit/botan/pull/2790 - Patch, Third Party Advisory | |
| References | () https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1 - Third Party Advisory | |
| References | () https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2 - Exploit, Third Party Advisory | |
| References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/72NB4OLD3VHJC3YF3PEP2HKF6BYURPAO/ - | |
| References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPHGYWNJQKWLTUWBNSFB4F66MQDIL3IB/ - | |
| References | () https://security.gentoo.org/glsa/202208-14 - Third Party Advisory |
07 Nov 2023, 03:38
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
Information
Published : 2021-09-06 19:15
Updated : 2024-11-21 06:24
NVD link : CVE-2021-40529
Mitre link : CVE-2021-40529
CVE.ORG link : CVE-2021-40529
JSON object : View
Products Affected
botan_project
- botan
mozilla
- thunderbird
fedoraproject
- fedora
CWE
CWE-327
Use of a Broken or Risky Cryptographic Algorithm