Published: 10/06/2019 Updated: 13/04/2022

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 4.7 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

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to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit malicious.rancher.site/upgrading" message.

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suse rancher 2.1.4

Exploit for CVE-2019-11881 (Rancher 2.1.4 Web Parameter Tampering)

VanCleef Rancher 214 Web Parameter Tampering (CVE-2019-11881) /vancleefrb rancher_ip rancher_port message_to_display (double-quoted) #Example: /vancleefrb 19216801 8080 "Rancher is outdated Please update following the instructions at 192168025/rancher-updating" MITRE CVE Announcement

NVD-CWE-noinfo https://github.com/rancher/rancher/issues/20216 https://github.com/MauroEldritch/VanCleef https://nvd.nist.gov https://github.com/MauroEldritch/VanCleef

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CVE-2019-11881

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