CVE-2019-5021
9.8 · CRITICALOverview
CVE-2019-5021 is a critical-severity vulnerability affecting gliderlabs docker-alpine. It was published on May 8, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Versions of the Official Alpine Linux Docker images (since v3.3) contain a NULL password for the `root` user. This vulnerability appears to be the result of a regression introduced in December of 2015. Due to the nature of this issue, systems deployed using affected versions of the Alpine Linux container which utilize Linux PAM, or some other mechanism which uses the system shadow file as an authentication database, may accept a NULL password for the `root` user.
Remediation
Check the references section for vendor advisories and patches from gliderlabs. Update docker-alpine to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| gliderlabs | docker-alpine | 3.3 | Affected |
References
Frequently Asked Questions
What is CVE-2019-5021?
CVE-2019-5021 is a critical-severity vulnerability affecting gliderlabs docker-alpine. It was published on May 8, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2019-5021?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-5021?
Check the references section for vendor advisories and patches from gliderlabs. Update docker-alpine to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-5021?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-5021 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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