Vulnerability · Published Feb 24, 2021 · Assigned by cisco

CVE-2021-1388Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass Vulnerability

Critical 10.0

In plain English

A critical-severity privilege mismanagement in Cisco ACI Multi-Site Orchestrator Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 14.8% (higher than 97% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)14.8%top 3.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco ACI Multi-Site Orchestrator Software	n/a

Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

20210224 Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass Vulnerability vendor-advisory, x_refsource_CISCO