Brocade Fabric OS Vulnerabilities

Brocade Fabric OS Vulnerabilities

Brocade Fabric OS Vulnerabilities

Lenovo Security Advisory: LEN-79718

Potential Impact: Information disclosure, hard-coded credentials

Severity: High

Scope of Impact: Industry-wide

CVE Identifier: CVE-2021-27796, CVE-2021-27797

Summary Description:

The following vulnerabilities were reported in Brocade Fabric OS.

CVE-2021-27796: Brocade reported a vulnerability in Brocade Fabric OS versions before Brocade Fabric OS v8.0.1b, v7.4.1d could allow an authenticated attacker within the restricted shell environment (rbash) as either the “user” or “factory” account, to read the contents of any file on the filesystem utilizing one of a few available binaries.

CVE-2021-27797: Brocade reported that Brocade Fabric OS before Brocade Fabric OS v8.2.1c, v8.1.2h, and all versions of Brocade Fabric OS v8.0.x and v7.x contain documented hard-coded credentials, which could allow attackers to gain access to the system.

Brocade details “Default Accounts” with default password “password” in the Brocade Fabric OS Administration guide. The Brocade Fabric OS Administration guide documents that a Brocade switch automatically prompts changing the default account passwords after logging in for the first time.

Mitigation Strategy for Customers (what you should do to protect yourself):

CVE-2021-27796: Brocade has provided Security update in Brocade Fabric OS versions Brocade Fabric OS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d. Brocade recommends upgrading to these versions or later to receive the security update.

CVE-2021-27797: The enforcement of mandatory password change was effective in Brocade Fabric OS versions Brocade Fabric OS v.9.0.0, v8.2.1c, v8.1.2h, and higher versions. Brocade recommends upgrading to these versions or later to receive the security update.

Brocade Fabric OS: v7.4.1b and v7.3.1d have reached End of Availability (EOA) and are no longer supported. Brocade also recommends Customers run supported Brocade software versions.

Product Impact:

To download the version specified for your product below, follow these steps:

Navigate to the Drivers & Software support site for your product:

  1. Search for your product by name or machine type.
  2. Click Drivers & Software on the left menu panel.
  3. Click on Manual Update to browse by Component type.
  4. Compare the minimum fix version for your product from the applicable product table below with the latest version posted on the support site.

Lenovo also offers tools to assist with update management as an alternative to the manual steps described above. Refer to the following for additional help:

PC Products and Software: https://support.lenovo.com/us/en/solutions/ht504759

Server and Enterprise Software: https://support.lenovo.com/us/en/solutions/lnvo-lxcaupd and https://datacentersupport.lenovo.com/us/en/documents/lnvo-center

Click below links to view affected products:

Networking Switches

References:

https://www.broadcom.com/support/fibre-channel-networking/security-advisories

Revision History:

Revision Date Description
1 2022-03-08 Initial release

For a complete list of all Lenovo Product Security Advisories, click here.

For the most up to date information, please remain current with updates and advisories from Lenovo regarding your equipment and software. The information provided in this advisory is provided on an “as is” basis without any warranty or guarantee of any kind. Lenovo reserves the right to change or update this advisory at any time.

Product Impact:

Networking Switches

Product Component CVE-2021-27796 CVE-2021-27797
Brocade - 6505 FC SAN Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo - B300 FC SAN Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo - B6505 FC SAN Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo - B6510 FC SAN Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo ThinkSystem DB400D FC Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo ThinkSystem DB610S FC Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo ThinkSystem DB620S FC Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo ThinkSystem DB630S FC Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo ThinkSystem DB720S FC Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h
Lenovo ThinkSystem DB800D FC Switch Brocade FOS v9.0.0, v8.0.1b, v7.4.2, v8.0.2, v7.4.1d v.9.0.0, v8.2.1c, v8.1.2h

Alias Id:LEN-79718
Document ID:PS500476
Original Publish Date:03/07/2022
Last Modified Date:03/08/2022