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Cisco 5000 Series Enterprise Network Compute System and Cisco UCS E-Series Servers BIOS Authentication Bypass Vulnerability

cisco-sa-20180620-encs-ucs-bios-auth-bypass · Medium · Published · Updated

A vulnerability in BIOS authentication management of Cisco 5000 Series Enterprise Network Compute System and Cisco Unified Computing (UCS) E-Series Servers could allow an unauthenticated, local attacker to bypass the BIOS authentication and execute actions as an unprivileged user. The vulnerability is due to improper security restrictions that are imposed by the affected system. An attacker could exploit this vulnerability by submitting an empty password value to an affected device's BIOS authentication prompt. An exploit could allow the attacker to have access to a restricted set of user-level BIOS commands. There is a workaround that addresses this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-encs-ucs-bios-auth-bypass

Cisco advisory ·CSAF JSON

Workarounds

Administrators can change the default, user-level BIOS password to a desired string. After updating the password, an empty password will no longer be accepted.

CVEsCVE-2018-0362
Cisco Bug IDsCSCvh83260
CVSS ScoreBase 4.3
Base 4.3 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Product Names From Source
Cisco Unified Computing System E-Series Software (UCSE), Cisco 5000 Series Enterprise Network Compute System

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