Vulnerability identifier: #VU23966

Vulnerability risk: High

CVSSv3.1: 9.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2019-15975

CWE-ID: CWE-798

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Cisco Data Center Network Manager
Server applications / Remote management servers, RDP, SSH

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to gain full access to vulnerable system.

The vulnerability exists in the REST API endpoint within the processing of the dbadmin/addUser functionality due to a static encryption key is shared between installations. A remote unauthenticated attacker can access the affected system using the static key to craft a valid session token and perform arbitrary actions through the REST API with administrative privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Data Center Network Manager: All versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-auth-bypass
http://www.zerodayinitiative.com/advisories/ZDI-20-003/

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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. However, a fully functional exploit for this vulnerability is available.