Vulnerability identifier: #VU20429

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-2019-1937

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Cisco UCS Director Express for Big Data
Server applications / Other server solutions
Cisco UCS Director
Server applications / Other server solutions
Cisco Integrated Management Controller Supervisor
Web applications / Remote management & hosting panels

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists in the web-based management interface due to insufficient request header validation during the authentication process. A remote attacker can send a series of malicious requests to an affected device, use the acquired session token and gain full administrator access to the affected device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco UCS Director Express for Big Data: 3.6.0.0 - 3.7.1.0

Cisco UCS Director: 6.6.0.0 - 6.6.1.0

Cisco Integrated Management Controller Supervisor: 2.2.0.3 - 2.2.0.6

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-authby

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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.