CVE-2019-5021

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.48% Top 20%
Vendor Advisory opensuse.org Vendor Advisory alpinelinux.org
Affected: n/a Alpine Linux
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/108288 vdb entry broken link
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html mailing list third party advisory vendor advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782 patch mitigation exploit third party advisory
https://security.netapp.com/advisory/ntap-20190510-0001/ third party advisory
https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html vendor advisory
https://support.f5.com/csp/article/K25551452 third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-5021?
CVE-2019-5021 has been scored as a critical severity vulnerability.
How to fix CVE-2019-5021?
To fix CVE-2019-5021, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-5021 being actively exploited in the wild?
It is possible that CVE-2019-5021 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-5021?
CVE-2019-5021 affects n/a Alpine Linux.
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