Vulnerability Details : CVE-2019-1851
A vulnerability in the External RESTful Services (ERS) API of the Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to generate arbitrary certificates signed by the Internal Certificate Authority (CA) Services on ISE. This vulnerability is due to an incorrect implementation of role-based access control (RBAC). An attacker could exploit this vulnerability by crafting a specific HTTP request with administrative credentials. A successful exploit could allow the attacker to generate a certificate that is signed and trusted by the ISE CA with arbitrary attributes. The attacker could use this certificate to access other networks or assets that are protected by certificate authentication.
Vulnerability category: BypassGain privilege
Products affected by CVE-2019-1851
- cpe:2.3:a:cisco:identity_services_engine:2.2\(0.470\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.3\(0.298\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.4\(0.357\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1851
0.07%
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-2019-1851
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:P/A:N |
8.0
|
2.9
|
NIST | |
6.8
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N |
2.3
|
4.0
|
Cisco Systems, Inc. | |
6.8
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N |
2.3
|
4.0
|
NIST |
CWE ids for CVE-2019-1851
-
The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2019-1851
-
http://www.securityfocus.com/bid/108356
Cisco Identity Services Engine CVE-2019-1851 Information Disclosure VulnerabilityThird Party Advisory;VDB Entry
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-ise-certcreation
Cisco Identity Services Engine Arbitrary Client Certificate Creation VulnerabilityVendor Advisory
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