Attacker Value
Very High
(1 user assessed)
Exploitability
Very Low
(1 user assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2019-19351

Disclosure Date: March 18, 2020
Exploited in the Wild
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

An insecure modification vulnerability in the /etc/passwd file was found in the container openshift/jenkins. An attacker with access to the container could use this flaw to modify /etc/passwd and escalate their privileges. This CVE is specific to the openshift/jenkins-slave-base-rhel7-containera as shipped in Openshift 4 and 3.11.

Add Assessment

2
Ratings
  • Attacker Value
    Very High
  • Exploitability
    Very Low
Technical Analysis

Requirements

  • openshift/jenkins-slave-base-rhel7-containera (as in Openshift 3.11, 4.2 and 4.3 are now fixed)
  • Access to the running container (requires auth)

Loot/result

Easy privilege escalation.

How to/Details

The said container modifies the permissions of /etc/passwd so that other users than root can modify it. An attacker can profit from this if they have access to the container.
The attacker can now make a new user with higher privileges, etc.

CVSS V3 Severity and Metrics
Base Score:
7.0 High
Impact Score:
5.9
Exploitability Score:
1
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
High
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • redhat

Products

  • openshift 3.11,
  • openshift 4.0

Exploited in the Wild

Reported by:
Technical Analysis