pfSense up to 2.4.4 WebGUI system_usermanager_addprivs.php descr Stored cross site scripting
|CVSS Meta Temp Score|
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
|Current Exploit Price (≈)|
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
|CTI Interest Score|
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
A vulnerability was found in pfSense up to 2.4.4 (Firewall Software). It has been declared as problematic. This vulnerability affects an unknown function of the file system_usermanager_addprivs.php of the component WebGUI. The manipulation of the argument
descr as part of a Parameter leads to a cross site scripting vulnerability (Stored). The CWE definition for the vulnerability is CWE-79. As an impact it is known to affect integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors. CVE summarizes:
pfSense before 2.4.5 has stored XSS in system_usermanager_addprivs.php in the WebGUI via the descr parameter (aka full name) of a user.
The weakness was released 04/01/2020. This vulnerability was named CVE-2020-11457 since 04/01/2020. The attack can be initiated remotely. The successful exploitation requires a single authentication. Successful exploitation requires user interaction by the victim. Technical details and also a exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.
It is declared as proof-of-concept. It is possible to download the exploit at exploit-db.com.
Upgrading to version 2.4.5 eliminates this vulnerability.
CVSSv3VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3
VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 5.4
NVD Vector: 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
NVD Base Score: 🔒
Class: Cross site scripting / Stored
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceThreat: 🔍
0-Day Time: 🔒
Upgrade: pfSense 2.4.5
Timeline04/01/2020 Advisory disclosed
04/01/2020 +0 days CVE assigned
04/02/2020 +1 days VulDB entry created
10/07/2020 +188 days VulDB last update
SourcesStatus: Not defined
CVE: CVE-2020-11457 (🔒)
EntryCreated: 04/02/2020 01:09 PM
Updated: 10/07/2020 06:47 AM
Changes: (1) source_exploitdb
Are you interested in using VulDB?
Download the whitepaper to learn more about our service!