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AUSCERT External Security Bulletin Redistribution
ESB-2019.3200
Cisco HyperFlex Static SSL Key Vulnerability
22 August 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco HyperFlex
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Privileged Data -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12621
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-hyperflex-sslkey
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco HyperFlex Static SSL Key Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190821-hyperflex-sslkey
First Published: 2019 August 21 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvk59403
CVE-2019-12621
CWE-320
CVSS Score:
6.8 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in Cisco HyperFlex Software could allow an unauthenticated,
remote attacker to perform a man-in-the-middle attack.
The vulnerability is due to insufficient key management. An attacker could
exploit this vulnerability by obtaining a specific encryption key for the
cluster. A successful exploit could allow the attacker to perform a
man-in-the-middle attack against other nodes in the cluster.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190821-hyperflex-sslkey
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco HyperFlex
Software releases earlier than Release 4.0(1a).
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
At the time of publication, Cisco HyperFlex Software releases 4.0(1a) and
later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190821-hyperflex-sslkey
Revision History
o +---------+--------------------------+---------+--------+-----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+-----------------+
| 1.0 | Initial public release. | - | Final | 2019-August-21 |
+---------+--------------------------+---------+--------+-----------------+
- --------------------------END INCLUDED TEXT--------------------
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