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CVE-2019-5021

CRITICAL

9.8

CVSS Score

Published: May 8, 2019 at 04:52 PM UTC

Updated: June 17, 2026 at 02:37 AM UTC

3 products affected across 3 vendorsLeapBig IP ControllerDocker Alpine· also runs on 1 platform

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Severity

CRITICAL9.8

Exploit prediction

EPSS 6%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Big IP Controller · F5

95%

Docker Alpine · Gliderlabs

95%

v ≥ 3.3Alpine 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

alpinelinux-alpine-linux (environment)

Leap · openSUSEdrupal

95%

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Alpinelinux · Alpinelinux

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory

Source: [email protected]

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html

VDB Entryx_refsource_BIDBroken Link

Source: [email protected]

http://www.securityfocus.com/bid/108288

x_refsource_MISCVendor Advisory

Source: [email protected]

https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://security.netapp.com/advisory/ntap-20190510-0001/

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://support.f5.com/csp/article/K25551452

x_refsource_MISCExploitMitigationPatchThird Party Advisory

Source: [email protected]

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0782

CVSS

9.8CRITICAL[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-258NVD-CWE-Other

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