PYSEC-2012-16

    Dashboard / Vulnerabilities / PYSEC-2012-16

    PYSEC-2012-16

    Published: 17 Jun 2012Last Modified: 10 Jun 2026

    Summary:

    Details: PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key.

    References: https://github.com/Legrandin/pycrypto/commit/9f912f13df99ad3421eff360d6a62d7dbec755c2, https://bugs.launchpad.net/pycrypto/+bug/985164, http://www.openwall.com/lists/oss-security/2012/05/25/1, http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081789.html, https://github.com/dlitz/pycrypto/blob/373ea760f21701b162e8c4912a66928ee30d401a/ChangeLog, http://secunia.com/advisories/49263, http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081759.html, http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081713.html, http://www.osvdb.org/82279, http://www.securityfocus.com/bid/53687, https://hermes.opensuse.org/messages/15083589, http://www.debian.org/security/2012/dsa-2502, http://www.mandriva.com/security/advisories?name=MDVSA-2012:117, https://exchange.xforce.ibmcloud.com/vulnerabilities/75871, https://github.com/advisories/GHSA-v367-p58w-98h5

    Affected packages

    Package

    Name: pycrypto

    Purl: pkg:pypi/pycrypto

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -9f912f13df99ad3421eff360d6a62d7dbec755c2

    Affected versions

    1.9a2

    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
    PYSEC-2012-16 | CVE-DB