// For flags

CVE-2021-3917

coreos-installer: restrict access permissions on /boot/ignition{,/config.ign}

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A flaw was found in the coreos-installer, where it writes the Ignition config to the target system with world-readable access permissions. This flaw allows a local attacker to have read access to potentially sensitive data. The highest threat from this vulnerability is to confidentiality.

Se ha encontrado un fallo en coreos-installer, que escribe la configuración de Ignition en el sistema de destino con permisos de acceso de lectura general. Este fallo permite a un atacante local tener acceso de lectura a datos potencialmente confidenciales. La mayor amenaza de esta vulnerabilidad es la confidencialidad.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-01 CVE Reserved
  • 2021-11-30 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-276: Incorrect Default Permissions
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
 Coreos-installer
Search vendor "Redhat" for product "Coreos-installer"
 < 0.10.0
Search vendor "Redhat" for product "Coreos-installer" and version " < 0.10.0"
-
Affected