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CVE-2021-40529 PUBLISHED CVSS 5.900000095367432 MEDIUM

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.

EPSS 0.30% · 53.1th percentile

Risk Scores

CVSS v3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score
0.30%
53.1th percentile

Affected Products

VendorProductVersions
fedoraprojectfedora34, 35
n/an/an/a
botan_projectbotan0
mozillathunderbird0

Timeline

References

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