CVE-2023-45139

10.01.2024, 16:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub_M	CNA	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVE	ADP	---				---
CISA-ADP	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 33%

Vendor	Product	Version
fonttools	fonttools	4.28.2 ≤ 𝑥 < 4.43.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

fonttools

bullseye	4.19.1-1 not-affected
bookworm	no-dsa
buster	not-affected
trixie	4.55.0-3 fixed
sid	4.55.0-3 fixed

Ubuntu Releases

Ubuntu Product

Codename

fonttools

oracular	not-affected
noble	not-affected
mantic	ignored
lunar	ignored
jammy	needs-triage
focal	needs-triage
bionic	needs-triage
xenial	needs-triage
trusty	ignored

Known Exploits!

Common Weakness Enumeration

CWE-611 - Improper Restriction of XML External Entity Reference
The software processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

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/package-announce@lists.fedoraproject.org/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/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/