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    Dashboard / CVE / CVE-2023-45139

    CVE-2023-45139

    fontTools is a library for manipulating fonts, written in Python. The subsetting module has a XML External Entity Injection (XXE) vulnerability which allows an attacker to resolve arbitrary entities when a candidate font (OT-SVG fonts), which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the filesystem fontTools is running on or make web requests from the host system. This vulnerability has been patched in version 4.43.0.

    Published:Jan 10, 2024
    Last Modified:Jun 3, 2025
    EPS:Jan 10, 2024
    EPSS Score:0.00131
    CVSS Score:7.5

    Affected Products

    Vendor
    Fonttools
    Product
    Fonttools

    Exploits

    https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    References

    http://www.openwall.com/lists/oss-security/2024/03/08/2
    http://www.openwall.com/lists/oss-security/2024/03/09/1
    https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c
    https://github.com/fonttools/fonttools/releases/tag/4.43.0
    https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5
    https://lists.fedoraproject.org/archives/list/[email protected]/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/
    http://www.openwall.com/lists/oss-security/2024/03/08/2
    http://www.openwall.com/lists/oss-security/2024/03/09/1
    https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c
    https://github.com/fonttools/fonttools/releases/tag/4.43.0
    https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5
    https://lists.fedoraproject.org/archives/list/[email protected]/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/

    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