CVE-2021-3917
First published: Fri Oct 29 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/coreos-installer | <0.10.0 | 0.10.0 |
| Redhat Coreos-installer | <0.10.0 |
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Reference Links
- https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b76638fbdb0c
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2018889
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1989544#c3
- https://access.redhat.com/errata/RHSA-2021:4829
- https://access.redhat.com/security/cve/cve-2021-3917
- https://bugzilla.redhat.com/show_bug.cgi?id=2018478
- https://access.redhat.com/security/cve/CVE-2021-3917
- https://github.com/coreos/fedora-coreos-tracker/issues/889
Frequently Asked Questions
What is the severity of CVE-2021-3917?
The severity of CVE-2021-3917 is high due to its impact on data confidentiality.
How do I fix CVE-2021-3917?
To fix CVE-2021-3917, upgrade the coreos-installer to version 0.10.1 or later.
Who is affected by CVE-2021-3917?
CVE-2021-3917 affects users of the coreos-installer up to version 0.10.0.
What type of vulnerability is CVE-2021-3917?
CVE-2021-3917 is a local privilege escalation vulnerability that allows unauthorized access to sensitive data.
Can CVE-2021-3917 be exploited remotely?
No, CVE-2021-3917 requires local access to the system to exploit the vulnerability.
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