cisco-sa-20190821-imcs-ucs-authbypass: Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability

First published: Wed Aug 21 2019(Updated: )

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an unauthenticated, remote attacker to bypass user authentication and gain access as an administrative user. The vulnerability is due to insufficient request header validation during the authentication process. An attacker could exploit this vulnerability by sending a series of malicious requests to an affected device. An exploit could allow the attacker to gain full administrative access to the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-authbypass

Credit: an external researcher who wants to remain anonymous.

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