MGASA-2021-0563

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    MGASA-2021-0563

    Published: 19 Dec 2021Last Modified: 16 Apr 2026
    Upstream:
    CVE-2021-40529

    Summary: Updated botan2 packages fix security vulnerability

    Details: 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://advisories.mageia.org/MGASA-2021-0563.html, https://bugs.mageia.org/show_bug.cgi?id=29659

    Affected packages

    Package

    Name: botan2

    Purl: pkg:rpm/mageia/botan2?arch=source&distro=mageia-8

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.17.3-2.1.mga8

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    MGASA-2021-0563 | CVE-DB