// For flags

CVE-2021-27565

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The web server in InterNiche NicheStack through 4.0.1 allows remote attackers to cause a denial of service (infinite loop and networking outage) via an unexpected valid HTTP request such as OPTIONS. This occurs because the HTTP request handler enters a miscoded wbs_loop() debugger hook.

El servidor web de InterNiche NicheStack versiones hasta 4.0.1, permite a atacantes remotos causar una denegación de servicio (bucle infinito y corte de red) por medio de una petición HTTP válida inesperada como OPTIONS. Esto ocurre porque el gestor de peticiones HTTP introduce un hook de depuración wbs_loop() codificado inapropiadamente.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-22 CVE Reserved
  • 2021-08-19 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-12-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Hcc-embedded
Search vendor "Hcc-embedded"
 Nichestack
Search vendor "Hcc-embedded" for product "Nichestack"
 <= 4.0.1
Search vendor "Hcc-embedded" for product "Nichestack" and version " <= 4.0.1"
-
Affected