Vulnerability Details : CVE-2021-1594
A vulnerability in the REST API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to perform a command injection attack and elevate privileges to root. This vulnerability is due to insufficient input validation for specific API endpoints. An attacker in a man-in-the-middle position could exploit this vulnerability by intercepting and modifying specific internode communications from one ISE persona to another ISE persona. A successful exploit could allow the attacker to run arbitrary commands with root privileges on the underlying operating system. To exploit this vulnerability, the attacker would need to decrypt HTTPS traffic between two ISE personas that are located on separate nodes.
Products affected by CVE-2021-1594
- cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6\(0.156\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.4\(0.902\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7\(0.903\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0\(0.458\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1\(0.440\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-1594
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-1594
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
NIST | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
Cisco Systems, Inc. | |
8.1
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.2
|
5.9
|
NIST |
CWE ids for CVE-2021-1594
-
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
-
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
-
A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2021-1594
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-priv-esc-UwqPrBM3
Cisco Identity Services Engine Privilege Escalation VulnerabilityVendor Advisory
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