MGASA-2016-0208

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    MGASA-2016-0208

    Published: 29 May 2016Last Modified: 16 Apr 2026

    Summary: Updated botan packages fix security vulnerabilities

    Details: Updated botan packages fix security vulnerabilities: During RSA decryption, how long decoding of PKCS #1 v1.5 padding took was input dependent. If these differences could be measured by an attacker, it could be used to mount a Bleichenbacher million-message attack (CVE-2015-7827). ECDSA (and DSA) signature algorithms perform a modular inverse on the signature nonce k. The modular inverse algorithm used had input dependent loops, and it is possible a side channel attack could recover sufficient information about the nonce to eventually recover the ECDSA secret key (CVE-2016-2849).

    References: https://advisories.mageia.org/MGASA-2016-0208.html, https://bugs.mageia.org/show_bug.cgi?id=18356, https://botan.randombit.net/security.html, https://www.debian.org/security/2016/dsa-3565

    Affected packages

    Package

    Name: botan

    Purl: pkg:rpm/mageia/botan?arch=source&distro=mageia-5

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.10.12-1.1.mga5

    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-2016-0208 | CVE-DB