CVE-2019-11881 — MEDIUM (4.7)

Vulnerability Description

A vulnerability exists in Rancher before 2.2.4 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to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.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 Score

4.7

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Suse	Rancher	2.1.4

References

https://github.com/MauroEldritch/VanCleefThird Party Advisory
https://github.com/rancher/rancher/blob/v2.2.4/pkg/auth/providers/saml/saml_clie
https://github.com/rancher/rancher/commit/e59adbc7565251919d84d6e353421104be8da0
https://github.com/rancher/rancher/issues/20216ExploitIssue TrackingThird Party Advisory
https://github.com/MauroEldritch/VanCleefThird Party Advisory
https://github.com/rancher/rancher/issues/20216ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2019-11881?

CVE-2019-11881 is a vulnerability with a CVSS score of 4.7 (MEDIUM). A vulnerability exists in Rancher before 2.2.4 in the login component, where the errorMsg parameter can be tampered to display arbitrary content, filtering tags but not special characters or symbols. ...

How severe is CVE-2019-11881?

CVE-2019-11881 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-11881?

Check the references section above for vendor advisories and patch information. Affected products include: Suse Rancher.