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CVE-2023-45139

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Date: January 10, 2024

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.

Language: Python

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2023-45139
https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75
https://github.com/fonttools/fonttools
https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/
https://github.com/fonttools/fonttools/releases/tag/4.43.0
http://www.openwall.com/lists/oss-security/2024/03/08/2
http://www.openwall.com/lists/oss-security/2024/03/09/1
https://www.mend.io/vulnerability-database/CVE-2023-45139

Severity Score

Weakness Type (CWE)

Improper Restriction of XML External Entity Reference ('XXE')

CWE-611

Top Fix

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Upgrade Version

Upgrade to version fonttools - 4.43.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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