CVE-2019-19345

Local privilege escalation via group-writable passwd file

Published Mar 20, 2020 · Updated Aug 5, 2024

Incorrect privilege assignment in Red Hat MediaWiki Ansible Playbook Bundle before 4.3.0 allows local users to gain container root. The image sets /etc/passwd to mode 0664, allowing its runtime group and any process in that group to append or replace account records. Existing access to the running container is required; a forged UID 0 entry enables privilege escalation inside the container.

CVSS severity7.0
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect privilege assignment in Red Hat MediaWiki Ansible Playbook Bundle before 4.3.0 allows local users to gain container root. The image sets /etc/passwd to mode 0664, allowing its runtime group and any process in that group to append or replace account records. Existing access to the running container is required; a forged UID 0 entry enables privilege escalation inside the container.

The record

CVE
CVE-2019-19345
Published
Mar 20, 2020
Updated
Aug 5, 2024
Vendor
Red Hat
Product
MediaWiki Ansible Playbook Bundle
Classifications
CWE-266, CWE-269, T1098
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Red Hat · MediaWiki Ansible Playbook Bundleversion=n/a

Published CVSS scores

7.0Red Hat, Inc.CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-269Improper Privilege Management
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo