Fedora 31: BOTAN2 Security Advisory For CBC Padding Side Channel

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.

Backport patch for #1849743 (CBC padding side channel) from 2.14.0.

* Sat Jul 4 2020 Thomas Moschny - 2.11.0-3

- Backport patch for #1849743 (CBC padding side channel) from 2.14.0

[ 1 ] Bug #1849745 - botan2: botan: CBC padding operations were not constant time and as a result would leak the length of the plaintext values which were being padded [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1849745

[ 2 ] Bug #1849746 - botan2: botan: CBC padding operations were not constant time and as a result would leak the length of the plaintext values which were being padded [epel-8]

https://bugzilla.redhat.com/show_bug.cgi?id=1849746

su -c 'dnf upgrade --advisory FEDORA-2020-f9a8f05df5' 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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