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    CVE-2020-13757

    Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).

    Published:May 27, 2020
    Last Modified:Nov 21, 2024
    EPS:Jun 1, 2020
    EPSS Score:0.00083
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Python-rsa Project
    Product
    Python-rsa
    Vendor
    Redhat
    Product
    Openshift

    Exploits

    https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667

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    References

    https://github.com/sybrenstuvel/python-rsa/issues/146
    https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/
    https://usn.ubuntu.com/4478-1/
    https://github.com/sybrenstuvel/python-rsa/issues/146
    https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/
    https://usn.ubuntu.com/4478-1/

    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