Key Manager Appliance - iDRAC 6 v2.90 - Multiple Weak Encryption Ciphers Enabled

3 years ago

Originally Published: 2018-04-12

Article Number

000065822

Applies To

All DPM Appliances running on Dell R710 / R710XL chassis.

CVE Identifier(s)

CVE-2013-2566, CVE-2015-4000, CVE-2016-2183

Article Summary

CVE-2013-2566 - The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for remote attackers to conduct plaintext-recovery attacks via statistical analysis of ciphertext in a large number of sessions that use the same plaintext.

CVE-2015-4000 - The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

CVE-2016-2183 - The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTPS session using Triple DES in CBC mode, aka a "Sweet32" attack.

Link to Advisories

https://nvd.nist.gov/vuln/detail/CVE-2013-2566 - Plaintext-recovery attacks via statistical analysis of ciphertext
https://nvd.nist.gov/vuln/detail/CVE-2015-4000 - Man-in-the-middle attacks by rewriting a ClientHello - aka "Logjam"
https://nvd.nist.gov/vuln/detail/CVE-2016-2183 - Obtain cleartext data via a birthday attack against a long-duration encrypted session - aka "Sweet32"

Alert Impact

Impacted - Apply Vendor Remedy

Alert Impact Explanation

iDRAC Firmware is part of the Dell R710 chassis and is separate from the RSA supplied DPM Appliance software.

Resolution

Customers have to download Dell racadm for Windows from:
https://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=8GMF6

Install and follow Dell's documented steps at:
http://en.community.dell.com/techcenter/b/techcenter/archive/2017/08/01/capability-for-disabling-tls1-0-on-idrac6-in-11th-generation-of-poweredge-servers.

Notes

iDRAC v2.90 firmware with release notes:
https://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=9GJYW

Disclaimer

Read and use the information in this RSA Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this product alert, contact RSA Software Technical Support at 1- 800 995 5095. RSA Security LLC and its affiliates, including without limitation, its ultimate parent company, Dell EMC, distributes RSA Security Advisories in order to bring to the attention of users of the affected RSA products, important security information. RSA 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. RSA 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 RSA, its affiliates or suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if RSA, its affiliates or suppliers have been advised of the possibility of such damages. Some jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.

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