2021-37573 | TTiny Java Web Server and Servlet Container 404 Error Page cross site scripting (SYSS-2021-042)
| 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. |
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| 3.5 | $0-$5k | 0.59 |
A vulnerability was found in TTiny Java Web Server and Servlet Container up to 1.115 (Web Server) and classified as problematic. This issue affects an unknown code block of the component 404 Error Page Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. Impacted is 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. The summary by CVE is:
A reflected cross-site scripting (XSS) vulnerability in the web server TTiny Java Web Server and Servlet Container (TJWS)
The weakness was disclosed 08/10/2021 as SYSS-2021-042. The advisory is shared at syss.de. The identification of this vulnerability is CVE-2021-37573 since 07/26/2021. The exploitation is known to be easy. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5
VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Cross site scripting
CWE: CWE-79
ATT&CK: T1059.007
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
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Threat Intelligence
Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: no mitigation known
Status: 🔍
0-Day Time: 🔒
07/26/2021 CVE assigned
08/10/2021 Advisory disclosed
08/10/2021 VulDB entry created
08/14/2021 VulDB last updateAdvisory: SYSS-2021-042
Status: Not defined
CVE: CVE-2021-37573 (🔒)
Created: 08/10/2021 10:59
Updated: 08/14/2021 22:08
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍
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