Vulnerability Details : CVE-2021-1388
A vulnerability in an API endpoint of Cisco ACI Multi-Site Orchestrator (MSO) installed on the Application Services Engine could allow an unauthenticated, remote attacker to bypass authentication on an affected device. The vulnerability is due to improper token validation on a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted request to the affected API. A successful exploit could allow the attacker to receive a token with administrator-level privileges that could be used to authenticate to the API on affected MSO and managed Cisco Application Policy Infrastructure Controller (APIC) devices.
Exploit prediction scoring system (EPSS) score for CVE-2021-1388
Probability of exploitation activity in the next 30 days: 2.60%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 89 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-1388
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
nvd@nist.gov |
|
10.0
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
3.9
|
6.0
|
ykramarz@cisco.com |
|
10.0
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
3.9
|
6.0
|
nvd@nist.gov |
CWE ids for CVE-2021-1388
-
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2021-1388
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mso-authbyp-bb5GmBQv
Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass VulnerabilityVendor Advisory
Products affected by CVE-2021-1388
- cpe:2.3:a:cisco:application_policy_infrastructure_controller:3.0\(3i\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:aci_multi-site_orchestrator:*:*:*:*:*:*:*:*