XML External Entity injection in fontTools - CVE-2023-45139
Published: February 7, 2024
Vulnerability identifier: #VU86217
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-45139
CWE-ID: CWE-611
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
fontTools
fontTools
Software vendor:
FontTools
FontTools
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied XML input when parsing SVG table. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.
Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.
Remediation
Install updates from vendor's website.
External links
- https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5
- https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c
- https://github.com/fonttools/fonttools/releases/tag/4.43.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/