// For flags

CVE-2021-31999

Rancher: Privilege escalation vulnerability via malicious Connection header

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the "Impersonate-User" or "Impersonate-Group" headers. This issue affects: Rancher versions prior to 2.5.9. Rancher versions prior to 2.4.16.

Una vulnerabilidad de Dependencia de Datos no Confiables en una DecisiĆ³n de Seguridad en Rancher permite a usuarios del cluster actuar como otros usuarios del cluster al falsificar los encabezados "Impersonate-User" o "Impersonate-Group". Este problema afecta a: Rancher versiones anteriores a 2.5.9. Rancher versiones anteriores a 2.4.16

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-03 CVE Reserved
  • 2021-07-15 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-807: Reliance on Untrusted Inputs in a Security Decision
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Rancher
Search vendor "Rancher"
Rancher
Search vendor "Rancher" for product "Rancher"
< 2.4.16
Search vendor "Rancher" for product "Rancher" and version " < 2.4.16"
-
Affected
Rancher
Search vendor "Rancher"
Rancher
Search vendor "Rancher" for product "Rancher"
>= 2.5.0 < 2.5.9
Search vendor "Rancher" for product "Rancher" and version " >= 2.5.0 < 2.5.9"
-
Affected