CVE-2023-45139

Public Exploit
fonttools XML External Entity Injection (XXE) Vulnerability

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.10%
Vendor Advisory github.com
Affected: fonttools fonttools
Published at:
Updated at:

References

Link Tags
https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5 vendor advisory exploit
https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c patch
https://github.com/fonttools/fonttools/releases/tag/4.43.0 release notes
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/
http://www.openwall.com/lists/oss-security/2024/03/09/1
http://www.openwall.com/lists/oss-security/2024/03/08/2

Frequently Asked Questions

What is the severity of CVE-2023-45139?
CVE-2023-45139 has been scored as a high severity vulnerability.
How to fix CVE-2023-45139?
To fix CVE-2023-45139, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-45139 being actively exploited in the wild?
It is possible that CVE-2023-45139 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-45139?
CVE-2023-45139 affects fonttools fonttools.
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