pfSense up to 2.4.4 WebGUI system_usermanager_addprivs.php descr Stored cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in pfSense up to 2.4.4. This impacts an unknown function of the file system_usermanager_addprivs.php of the component WebGUI. Executing a manipulation of the argument descr as part of Parameter can lead to cross site scripting (Stored). This vulnerability is handled as CVE-2020-11457. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

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. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. 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 public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:system_usermanager_addprivs.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.4.5 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Stored
Class: Cross site scripting / Stored
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: pfSense 2.4.5
Patch: github.com

Timelineinfo

04/01/2020 🔍
04/01/2020 +0 days 🔍
04/02/2020 +1 days 🔍
05/09/2025 +1863 days 🔍

Sourcesinfo

Product: github.com

Advisory: 157104
Status: Confirmed

CVE: CVE-2020-11457 (🔍)
GCVE (CVE): GCVE-0-2020-11457
GCVE (VulDB): GCVE-100-152656
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/02/2020 13:09
Updated: 05/09/2025 23:34
Changes: 04/02/2020 13:09 (40), 04/02/2020 13:14 (18), 10/07/2020 06:47 (1), 05/13/2024 08:26 (20), 05/13/2024 08:29 (1), 06/20/2024 02:26 (9), 05/09/2025 23:34 (5)
Complete: 🔍
Cache ID: 216::103

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