High severity · published Jul 15, 2021
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"…
8.8
CVSS
1.1%
EPSS
No
On KEV
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:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
Rancher · Rancher
before 2.4.16; 2.5.0 before 2.5.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31999
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31999
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1187084
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