2021-37465 | NCH Quorum uploaddoc 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 classified as problematic was found in NCH Quorum up to 2.03. This vulnerability affects an unknown code block of the file /uploaddoc. The manipulation of the argument
id with an unknown input leads to a cross site scripting vulnerability. 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:
In NCH Quorum v2.03 and earlier, XSS exists via /uploaddoc?id= (reflected).
The weakness was disclosed 07/26/2021. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-37465 since 07/25/2021. The exploitation appears to be easy. The attack can be initiated remotely. The requirement for exploitation is 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 declared as proof-of-concept. It is possible to download the exploit at github.com.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.2
0-Day Time: 🔒
Download the whitepaper to learn more about our service!