VDB-135271 · CVE-2019-11816 · Qualys 34076

OPNsense/pfsense WebUI Request access control

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CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.06

A vulnerability classified as critical was found in OPNsense and pfsense (Firewall Software) (affected version unknown). Affected by this vulnerability is an unknown part of the component WebUI. The manipulation as part of a Request leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-284. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Incorrect access control in the WebUI in OPNsense before version 19.1.8, and pfsense before 2.4.4-p3 allows remote authenticated users to escalate privileges to administrator via a specially crafted request.

The weakness was released 05/20/2019 (Website). It is possible to read the advisory at forum.opnsense.org. This vulnerability is known as CVE-2019-11816 since 05/08/2019. The attack can be launched remotely. A single authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 34076 (pfSense 2.4.4-p3 Not Installed Multiple Vulnerabilities (pfSense-SA-19_01)(pfSense-SA-19_02)(pfSense-SA-19_03)(pfSense-SA-19_04)(pfSense-SA-19_05)(pfSense-SA-19_06)(pfSense-SA-19_07)(pfSense-SA-19_08)).

Upgrading eliminates this vulnerability.

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VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-284
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

05/08/2019 🔍
05/20/2019 +12 days 🔍
05/21/2019 +1 days 🔍
06/13/2020 +389 days 🔍

Sourcesinfoedit

Advisory: forum.opnsense.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-11816 (🔍)

Entryinfoedit

Created: 05/21/2019 07:34 AM
Updated: 06/13/2020 10:45 PM
Changes: (1) advisory_confirm_url
Complete: 🔍

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