CVE-2023-42325
Published: 14 November 2023
Summary
CVE-2023-42325 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Netgate Pfsense. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 2.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-42325 is a cross-site scripting vulnerability (CWE-79) affecting the web GUI of Netgate pfSense version 2.7.0. The flaw resides in the status_logs_filter_dynamic.php page and permits injection of malicious scripts through a specially crafted URL.
An attacker with low-privileged web GUI access can supply the crafted URL to a higher-privileged user; when the link is followed, the script executes in the victim’s browser context with changed scope, enabling limited read and write actions that can be leveraged to escalate privileges.
Netgate has published advisory pfSense-SA-23_09.webgui.asc detailing the issue, while SonarSource has released a technical analysis of the pfSense web GUI vulnerabilities.
The EPSS score for this CVE reached a peak of 0.4831 shortly after disclosure and has remained at that level.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-46778
Vulnerability details
Cross Site Scripting (XSS) vulnerability in Netgate pfSense v.2.7.0 allows a remote attacker to gain privileges via a crafted url to the status_logs_filter_dynamic.php page.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.