Privilege escalation in Cisco ACI Multi-Site Orchestrator

1) Improper Privilege Management

EUVDB-ID: #VU50937

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1388

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to improper token validation on a specific API endpoint. A remote attacker can send a specially crafted request and receive a token with administrator-level privileges.

Note: This vulnerability affects Cisco ACI Multi-Site Orchestrator (MSO) only when deployed on a Cisco Application Services Engine.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ACI Multi-Site Orchestrator: 3.0

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mso-authbyp-bb5GmBQv

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.