CVE-2021-31999 — Reliance on Untrusted Inputs in a Security Decision in Rancher

CWE-807 — Reliance on Untrusted Inputs in a Security Decision5 documents4 sources
Severity
8.8HIGHNVD
EPSS
0.4%
top 40.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
RancherRancher Suse Linux Enterprise Server 15Github.com Rancher Rancher
Timeline
PublishedJul 15
Latest updateJun 10

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages4 packages

▶CVEListV5rancher/rancherRancher — 2.5.9
▶NVDrancher/rancher2.5.0 — 2.5.9+1
▶Gogithub.com/rancher_rancher2.0.0 — 2.4.16+2
▶CVEListV5rancher/suse_linux_enterprise_server_15Rancher — 2.4.16

🔴Vulnerability Details

4
OSV
Rancher Privilege escalation vulnerability via malicious "Connection" header in github.com/rancher/rancher↗2024-06-10
▶
GHSA
Rancher Privilege escalation vulnerability via malicious "Connection" header↗2024-04-24
▶
OSV
Rancher Privilege escalation vulnerability via malicious "Connection" header↗2024-04-24
▶
CVEList
Rancher: Privilege escalation vulnerability via malicious Connection header↗2021-07-15
▶
CVE-2021-31999 — Rancher vulnerability | cvebase