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

8.8HIGH

Key Information:

Vendor

Rancher

Status
Rancher
Suse Linux Enterprise Server 15
Vendor
CVE Published:
15 July 2021

What is CVE-2021-31999?

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.

Affected Version(s)

Rancher Rancher < 2.5.9

SUSE Linux Enterprise Server 15 Rancher < 2.4.16

References

https://bugzilla.suse.com/show_bug.cgi?id=1187084
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.