Security Bulletin: Vulnerabilities in OpenSSL affect IBM Cisco MDS Directors and Switches (CVE-2016-0701, CVE-2015-3197)

Created by Igets Administrator on Fri, 11/18/2016 - 14:24

Security Bulletin

Summary

OpenSSL vulnerabilities were disclosed on January 28, 2016 by the OpenSSL Project. OpenSSL is used by IBM Cisco MDS Directors and Switches. IBM Cisco MDS Directors and Switches has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2016-0701

DESCRIPTION: OpenSSL could allow a remote attacker to conduct man-in-the-middle attacks, caused by the use of weak Diffie-Hellman parameters based on unsafe primes that are generated and stored in X9.42-style parameter files. By performing multiple handshakes using the same private DH exponent, an attacker could exploit this vulnerability to conduct man-in-the-middle attacks.

CVSS Base Score: 5.4

CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110234 for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)

CVEID: CVE-2015-3197

DESCRIPTION: OpenSSL could allow a remote attacker to conduct man-in-the-middle attacks, caused by an error related to the negotiation of disabled SSLv2 ciphers by malicious SSL/TLS clients. An attacker could exploit this vulnerability to conduct man-in-the-middle attacks.

CVSS Base Score: 5.4

CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110235 for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)

Affected Products and Versions

IBM Cisco Directors and Switches with NX-OS firmware 5.X, 6.X, and 7.X.

Remediation/Fixes

Cisco MDS NX-OS Release 7.3.1(D1)
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/7_3/release_notes/mds_nxos_rn_7_3.html

Cisco MDS NX-OS Release 6.2(17)
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/6_2/release/notes/nx-os/mds_nxos_rn_6_2_17.html

Cisco MCS NX-OS Release 5.2(8h)
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/5_2/release/notes/nx-os/mds_nxos_rn_528h.html

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

Acknowledgement

None

Change History

18 November 2016: Original version published
10 January 2017: Corrected Spacing in vulnerabiity Details section

*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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Tips

Security Bulletin: Vulnerabilities in OpenSSL affect IBM Cisco MDS Directors and Switches (CVE-2016-0701, CVE-2015-3197)