CVE ID:	CVE-2021-40529
Description:	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.
Test IDs:	1.3.6.1.4.1.25623.1.1.10.2021.0563   1.3.6.1.4.1.25623.1.0.819070   1.3.6.1.4.1.25623.1.0.819181
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-40529 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHGYWNJQKWLTUWBNSFB4F66MQDIL3IB/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/72NB4OLD3VHJC3YF3PEP2HKF6BYURPAO/ https://security.gentoo.org/glsa/202208-14 https://eprint.iacr.org/2021/923 https://eprint.iacr.org/2021/923 https://github.com/randombit/botan/pull/2790 https://github.com/randombit/botan/pull/2790 https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1 https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1 https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2 https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2