Critical Advisory for Fedora 34: CVE-2021-40529 Plaintext Recovery Risk

Botan is a BSD-licensed crypto library written in C++. It provides a

wide variety of basic cryptographic algorithms, X.509 certificates and

CRLs, PKCS \#10 certificate requests, a filter/pipe message processing

system, and a wide variety of other features, all written in portable

C++. The API reference, tutorial, and examples may help impart the

flavor of the library. This is the current stable release branch 2.x

of Botan.

Security fix for CVE-2021-40529

* Sun Nov 7 2021 Ben Kircher - 2.17.3-4

- Backport patch for #2002827 (Fix short exponents with ElGamal) from 2.18.2

[ 1 ] Bug #2002825 - CVE-2021-40529 botan: ElGamal implementation allows plaintext recovery

https://bugzilla.redhat.com/show_bug.cgi?id=2002825

su -c 'dnf upgrade --advisory FEDORA-2021-8d51cac49f' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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