CVE-2021-31999
Rancher Privilege escalation vulnerability via malicious "Connection" header in github.com/rancher/rancher
Description
Rancher Privilege escalation vulnerability via malicious "Connection" header in github.com/rancher/rancher. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/rancher/rancher before v2.4.16, from v2.5.0 before v2.5.9.
How to fix CVE-2021-31999
To remediate CVE-2021-31999, upgrade the affected package to a fixed version below.
- —upgrade to 2.4.16 or later
- —no fix listed
Is CVE-2021-31999 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 2.0.0, < 2.4.16
- >= 2.0.0+incompatible
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |