CVE-2019-5021
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 6.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 6.3% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 6.3% · EPSS, next 30 days
- Weakness
- CWE-258
- Record status
- Modified
Affected
- Gliderlabs docker-alpine
- Opensuse Leap 15.0
- Opensuse Leap 15.1
- f5 big-ip Controller 1.2.1
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2019-5021.md and follow it. Check whether this project is affected by CVE-2019-5021. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782
- https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html
- http://www.securityfocus.com/bid/108288
- https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html
- https://security.netapp.com/advisory/ntap-20190510-0001/
- https://support.f5.com/csp/article/K25551452
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html
- http://www.securityfocus.com/bid/108288
- https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html
- https://security.netapp.com/advisory/ntap-20190510-0001/
- https://support.f5.com/csp/article/K25551452
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782