PYSEC-2013-29

    Dashboard / Vulnerabilities / PYSEC-2013-29

    PYSEC-2013-29

    Published: 26 Oct 2013Last Modified: 10 Jun 2026

    Summary:

    Details: The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it, which makes it easier for context-dependent attackers to obtain sensitive information by leveraging a race condition in which a child process is created and accesses the PRNG within the same rate-limit period as another process.

    References: https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175, http://www.debian.org/security/2013/dsa-2781, http://www.openwall.com/lists/oss-security/2013/10/17/3, https://github.com/advisories/GHSA-x377-f64p-hf5j

    Affected packages

    Package

    Name: pycrypto

    Purl: pkg:pypi/pycrypto

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -19dcf7b15d61b7dc1a125a367151de40df6ef175

    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-2013-29 | CVE-DB