Vulnerability · Published Aug 23, 2022 · Assigned by redhat
CVE-2021-3917
Medium 5.5
In plain English
A medium-severity incorrect default permissions in coreos-installer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 85.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | coreos-installer | Fixed in coreos-installer 0.10.0 |
Weakness: CWE-276
References
- https://github.com/coreos/fedora-coreos-tracker/issues/889 x_refsource_MISC
- https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b76638fbdb0c x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=2018478 x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2021-3917 x_refsource_MISC