PYSEC-2017-94

    Dashboard / Vulnerabilities / PYSEC-2017-94

    PYSEC-2017-94

    Published: 15 Feb 2017Last Modified: 8 Nov 2023

    Summary:

    Details: Heap-based buffer overflow in the ALGnew function in block_templace.c in Python Cryptography Toolkit (aka pycrypto) allows remote attackers to execute arbitrary code as demonstrated by a crafted iv parameter to cryptmsg.py.

    References: https://pony7.fr/ctf:public:32c3:cryptmsg, https://lists.fedoraproject.org/archives/list/[email protected]/message/RJ37R2YLX56YZABFNAOWV4VTHTGYREAE/, https://lists.fedoraproject.org/archives/list/[email protected]/message/C6BWNADPLKDBBQBUT3P75W7HAJCE7M3B/, https://github.com/dlitz/pycrypto/issues/176, https://github.com/dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4, https://bugzilla.redhat.com/show_bug.cgi?id=1409754, http://www.securityfocus.com/bid/95122, http://www.openwall.com/lists/oss-security/2016/12/27/8, https://security.gentoo.org/glsa/201702-14, https://github.com/advisories/GHSA-cq27-v7xp-c356

    Affected packages

    Package

    Name: pycrypto

    Purl: pkg:pypi/pycrypto

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4

    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