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CVE-2021-3917

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Date: August 23, 2022

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.

Language: RUST

Severity Score

Related Resources (9)

https://bugzilla.redhat.com/show_bug.cgi?id=2018478
https://access.redhat.com/security/cve/CVE-2021-3917
https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b76638fbdb0c
https://nvd.nist.gov/vuln/detail/CVE-2021-3917
https://github.com/coreos/fedora-coreos-tracker/issues/889
https://github.com/coreos/coreos-installer/releases/tag/v0.10.0
https://github.com/coreos/coreos-installer/security/advisories/GHSA-862g-9h5m-m3qv
https://github.com/coreos/coreos-installer
https://www.mend.io/vulnerability-database/CVE-2021-3917

Severity Score

Weakness Type (CWE)

Incorrect Default Permissions

CWE-276

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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