DSA-2020-128: iDRAC Local File Inclusion Vulnerability


DSA-2020-128: iDRAC Local File Inclusion Vulnerability


DSA ID: DSA-2020-128
CVE Identifier: CVE-2020-5366
Severity: High

Severity Rating: CVSSv3 Base Score: 7.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L)

Affected products:

  • Dell EMC iDRAC9 versions prior to 4.20.20.20

Summary:
Dell EMC iDRAC has been updated to address a vulnerability that may be exploited to compromise the affected systems.

Details:

  • Improper Limitation of a Pathname to a Restricted Directory ("Path Traversal")

Dell EMC iDRAC9 versions prior to 4.20.20.20 contain a Path Traversal Vulnerability. A remote authenticated malicious user with low privileges could potentially exploit this vulnerability by manipulating input parameters to gain unauthorized read access to the arbitrary files.


Resolution:
The following Dell EMC iDRAC firmware releases contain resolutions to these vulnerabilities:

iDRAC iDRAC firmware version
iDRAC9 4.20.20.20

Note: Available as of the publication date.

Dell EMC recommends all customers upgrade at the earliest opportunity.


Dell EMC Best Practices regarding iDRAC:

  • The iDRAC is intended to be on a separate management network. The iDRAC is not designed nor intended to be placed on, nor connected directly to the Internet. Doing so could expose the connected system to security and other risks for which Dell EMC is not responsible.
  • Dell EMC recommends using the Dedicated Gigabit Ethernet port available on rack and tower servers to connect the iDRAC to a separate management network.
  • Along with locating iDRAC on a separate management network, users should isolate the management subnet/vLAN with technologies such as firewalls, and limit access to the subnet/vLAN to authorized server administrators.
  • Dell EMC recommends using 256-bit encryption strength as well as TLS 1.2 or higher. For tighter control, additional ciphers may be removed via "Cipher Select" – see the iDRAC User Guide for more details.
  • Dell EMC recommends additional settings such as IP range filtering and System Lockdown Mode.
  • Dell EMC recommends using additional security authentication options such as Microsoft Active Directory or LDAP.
  • Dell EMC recommends keeping iDRAC firmware up to date.


Link to remedies:

Customers can download software, including the latest release of iDRAC firmware, from the Dell Support site.
https://www.dell.com/support/home/
Customers can find the iDRAC documentation from the Dell EMC Support site.
www.dell.com/idracmanuals


Credit:

CVE-2020-5366: Dell EMC would like to thank Georgy Kiguradze and Mark Ermolov from Positive Technologies

Dell EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. Dell EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event shall Dell EMC, or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Dell EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.





Article ID: SLN322125

Last Date Modified: 07/07/2020 10:57 AM

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