CVE-2019-11881 Information

Description

A vulnerability exists in Rancher 2.1.4 in the login component where the errorMsg parameter can be tampered to display arbitrary content filtering tags but not special characters or symbols. There’s no other limitation of the message allowing malicious users to lure legitimate users to visit phishing sites with scare tactics e.g. displaying a \This version of Rancher is outdated please visit https://malicious.rancher.site/upgrading\ message.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Reference

https://github.com/MauroEldritch/VanCleef https://github.com/rancher/rancher/issues/20216

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

4.7