PT-2021-10306 · Netgate · Pfsense

Dharmesh Baskaran · Published 2021-07-12 · Updated 2021-09-14 · CVE-2020-19201

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Netgate pfSense versions 2.4.4-p2 and earlier

Description: A Stored Cross-Site Scripting (XSS) issue was found in the status filter reload.php page of the pfSense software WebGUI. The page did not properly encode output from the filter reload process, allowing a stored XSS attack via the descr parameter on NAT rules.

Recommendations: For Netgate pfSense versions 2.4.4-p2 and earlier, update to a version that includes the fix for this issue to prevent stored XSS attacks. As a temporary workaround, consider restricting access to the status filter reload.php page and avoiding the use of the descr parameter on NAT rules until a patch is available.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-19201

Affected Products

Pfsense

References · 7

• 🔥 https://gist.github.com/dharmeshbaskaran/fd3779006361d07651a883e8a040d916 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-19201 · Security Note
• https://docs.netgate.com/pfsense/en/latest/releases/2-4-4-p3.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-19201 · Vendor Advisory
• https://pfsense.org/download · Vendor Advisory
• https://t.me/cvenotify/20832 · Telegram Post
• https://t.me/cvenotify/17675 · Telegram Post