CVE-2023-45139

HIGH EPSS 65.1%
Published Jan 10, 20242y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jan 10, 2024 2y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
65.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-611

Affected Products 1

VendorProductVersionRange
fonttoolsfonttools*≥4.28.2  –  <4.43.0

References 6

  • openwall.com http://www.openwall.com/lists/oss-security/2024/03/08/2
  • openwall.com http://www.openwall.com/lists/oss-security/2024/03/09/1
  • github.com https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c
    Patch
  • github.com https://github.com/fonttools/fonttools/releases/tag/4.43.0
    Release Notes
  • github.com https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5
    ExploitVendor Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/

Remediation

  • github.com https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c
    Patch