CVE-2019-12347 — In pfSense 2

In pfSense 2.4.4-p3, a stored XSS vulnerability occurs when attackers inject a payload into the Name or Description field via an acme_accountkeys_edit.php action. The vulnerability occurs due to input validation errors.

01What is this vulnerability?

In pfSense 2.4.4-p3, a stored XSS vulnerability occurs when attackers inject a payload into the Name or Description field via an acme_accountkeys_edit.php action. The vulnerability occurs due to input validation errors.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-05-29T18:29:16.000Z
• Last modified: 2024-08-04T23:17:39.907Z

09References

• redmine.pfsense.org — https://redmine.pfsense.org/issues/9554#change-40729
• www.pfsense.org — https://www.pfsense.org/download/
• ctrsec.io — https://ctrsec.io/index.php/2019/05/28/stored-xss-acme-pfsense-2-4-4-p3/
• packetstormsecurity.com — http://packetstormsecurity.com/files/153112/pfSense-2.4.4-p3-Cross-Site-Scriptin…
• github.com — https://github.com/pfsense/FreeBSD-ports/commit/504909564079e540689dbdbed3a57948…