MGASA-2021-0563 - Updated botan2 packages fix security vulnerability Publication date: 19 Dec 2021 URL: https://advisories.mageia.org/MGASA-2021-0563.html Type: security Affected Mageia releases: 8 CVE: CVE-2021-40529 Updated botan2 packages fix security vulnerability: 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 (CVE-2021-40529). References: - https://bugs.mageia.org/show_bug.cgi?id=29659 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40529 SRPMS: - 8/core/botan2-2.17.3-2.1.mga8
Mageia 2021-0563: botan2 security update
Summary
CVE: CVE-2021-40529
Updated botan2 packages fix security vulnerability:
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 (CVE-2021-40529).
Resolution
MGASA-2021-0563 - Updated botan2 packages fix security vulnerability
References
- https://bugs.mageia.org/show_bug.cgi?id=29659
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40529
Severity
Issued Date: 19 Dec 2021
URL: https://advisories.mageia.org/MGASA-2021-0563.html
Type: security
Affected Mageia releases: 8
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