CVE-2016-2849

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    CVE-2016-2849

    Published: 13 May 2016Last Modified: 8 Jul 2026

    Summary:

    Details: Botan before 1.10.13 and 1.11.x before 1.11.29 do not use a constant-time algorithm to perform a modular inverse on the signature nonce k, which might allow remote attackers to obtain ECDSA secret keys via a timing side-channel attack.

    References: http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183669.html, http://botan.randombit.net/security.html, http://marc.info/?l=botan-devel&m=146185420505943&w=2, http://www.debian.org/security/2016/dsa-3565, https://security.gentoo.org/glsa/201701-23

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 94a3fa8ae0dc4df67f6e9ba780427e651baa9dfd
    Fixed -None

    Affected versions

    1.10.12

    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