Vulnerability in Alpinelinux Alpine Linux
CVE-2019-5021
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.063 (93.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.063 · newest: 0.063 · change: 0.000
Affected products
- Alpinelinux Alpine Linux
- F5 Big-Ip Controller — versions 1.2.1
- Gliderlabs Docker-Alpine
- openSUSE Leap — versions 15.0, 15.1
- Alpine Linux — versions Alpine Docker 3.3 Alpine Docker 3.4 Alpine Docker 3.5 Alpine Docker 3.6 Alpine Docker 3.7 Alpine Docker 3.8 Alpine Docker 3.9 Alpine Docker Edge
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/108288 (vdb-entry, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- talosintelligence.com/vulnerability_reports/TALOS-2019-0782 (Exploit, Patch, Third Party Advisory, Mitigation)
- security.netapp.com/advisory/ntap-20190510-0001/ (Third Party Advisory)
- alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html (Vendor Advisory)
- support.f5.com/csp/article/K25551452 (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-5021?
- CVE-2019-5021 is a critical-severity vulnerability in Alpinelinux Alpine Linux, classified under CWE-258. CVSS score: 9.8/10. Published 2019-05-08.
- How severe is CVE-2019-5021?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-5021 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.