Vulnerability · Published Jul 15, 2021 · Assigned by suse
CVE-2021-31999Rancher: Privilege escalation vulnerability via malicious Connection header
High 8.8
In plain English
A high-severity security flaw in Rancher from Rancher. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.1%top 35.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/rancher/rancher | 2.4.16 | GHSA-pvxj-25m6-7vqr |
| Go | github.com/rancher/rancher | 2.5.9 | GHSA-pvxj-25m6-7vqr |
| Go | github.com/rancher/rancher | no fix listed | GO-2024-2778 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Rancher | Rancher | Rancher – before 2.5.9 |
| Rancher | SUSE Linux Enterprise Server 15 | Rancher – before 2.4.16 |
Weakness: CWE-807 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://bugzilla.suse.com/show_bug.cgi?id=1187084 x_refsource_CONFIRM