IBM Support

Security Bulletin: IBM Cisco Switches and Directors vulnerable to Sweet32 Birthday attacks (CVE-2016-2183 CVE-2016-6329).

Created by Igets Administrator on
Published URL:
https://www.ibm.com/support/pages/node/697385
697385

Security Bulletin


Summary

IBM Cisco Switches and Directors vulnerable to Sweet32 Birthday attacks on 64-bit block ciphers in TLS and OpenVPN (openssl ,redhat,openVPN)

Vulnerability Details

CVEID: CVE-2016-2183
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error in the DES/3DES cipher, used as a part of the SSL/TLS protocol. By capturing large amounts of encrypted traffic between the SSL/TLS server and the client, a remote attacker able to conduct a man-in-the-middle attack could exploit this vulnerability to recover the plaintext data and obtain sensitive information. This vulnerability is known as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/116337 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2016-6329
DESCRIPTION: OpenVPN could allow a remote attacker to obtain sensitive information, caused by an error in the in the Triple-DES on 64-bit block cipher, used as a part of the SSL/TLS protocol. By capturing large amounts of encrypted traffic between the SSL/TLS server and the client, a remote attacker able to conduct a man-in-the-middle attack could exploit this vulnerability to recover the plaintext data and obtain sensitive information. This vulnerability is known as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/116341 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

IBM Cisco Switches and Directors with NX-OS Firmware levels prior to 5.2(8i), 6.2(19), and 8.1.

Remediation/Fixes

Fixes are in NX-OS Firmware levels:

5.2(8i):


http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/5_2/release/notes/nx-os/mds_nxos_rn_528i.html

6.2(19):


http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/6_2/release/notes/nx-os/mds_nxos_rn_6_2_19.html

8.1:


http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/8_1/release_notes/mds_nxos_rn_8_1.html

Workarounds and Mitigations

No workarounds.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off
Complete CVSS v3 Guide

On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

05/17/2017 - Original Creation

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
11 April 2022

UID

ssg1S1010239

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