cisco-sa-20180620-encs-ucs-bios-auth-bypass

csafUScisco_csaf

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

view advisory published 2018-06-20

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 ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-encs-ucs-bios-auth-bypass"]

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2018-0362USmedium4.3—
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 unauthent…
02

references

External citations — patches, advisories, analysis.

03

remediations (4)

  • FixedCisco 5000 Series Enterprise Network Compute System

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Unified Computing System E-Series Software (UCSE)

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • WorkaroundCisco 5000 Series Enterprise Network Compute System

    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.

  • WorkaroundCisco Unified Computing System E-Series Software (UCSE)

    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.

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan