CVE-2021-31999
Published: 15 July 2021
Summary
CVE-2021-31999 is a high-severity Reliance on Untrusted Inputs in a Security Decision (CWE-807) vulnerability in Rancher Rancher. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 40.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-1271
Vulnerability details
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.…
more
Rancher versions prior to 2.4.16.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Prevents reliance on untrusted matching results for security-relevant decisions by enforcing verification and contest procedures.
Providing authoritative attributes with the data reduces the need for security decisions to rely on untrusted external inputs.
Reduces reliance on untrusted inputs by ensuring only authorized sources may supply data.