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.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-27704 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T02:44:10.857Z

Reserved: 2021-09-06T00:00:00

Link: CVE-2021-40529

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-09-06T19:15:07.630

Modified: 2024-11-21T06:24:20.040

Link: CVE-2021-40529

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses