CVE-2021-31999 Rancher: Privilege escalation vulnerability via malicious Connection header

2021-07-1500:00:00

CWE-807

suse

www.cve.org

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

37.0%

JSON

A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the “Impersonate-User” or “Impersonate-Group” headers. This issue affects: Rancher versions prior to 2.5.9. Rancher versions prior to 2.4.16.

CNA Affected

[
  {
    "product": "Rancher",
    "vendor": "Rancher",
    "versions": [
      {
        "lessThan": "2.5.9",
        "status": "affected",
        "version": "Rancher",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "SUSE Linux Enterprise Server 15",
    "vendor": "Rancher",
    "versions": [
      {
        "lessThan": "2.4.16",
        "status": "affected",
        "version": "Rancher",
        "versionType": "custom"
      }
    ]
  }
]