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.
References (6)
Core 6
Core References
Broken Link vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/108288
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html
Exploit, Mitigation, Patch, Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190510-0001/
Vendor Advisory x_refsource_misc
https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html
Third Party Advisory x_refsource_confirm
https://support.f5.com/csp/article/K25551452
Scores
CVSS v3
9.8
EPSS
0.0351
EPSS Percentile
87.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-258
Status
published
Products (4)
f5/big-ip_controller
1.2.1
gliderlabs/docker-alpine
3.3
opensuse/leap
15.0
opensuse/leap
15.1
Published
May 08, 2019
Tracked Since
Feb 18, 2026