CVE-2021-40529

Use of a Broken or Risky Cryptographic Algorithm in conan/botan

Identifiers

CVE-2021-40529

Package Slug

conan/botan

Vulnerability

Use of a Broken or Risky Cryptographic Algorithm

Description

The ElGamal implementation in Botan, 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.

Affected Versions

All versions up to 2.18.1

Solution

Upgrade to version 2.18.2 or above.

Last Modified

2021-09-16

source