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AUSCERT External Security Bulletin Redistribution
ESB-2021.1528
Cisco HyperFlex HX Command Injection Vulnerabilities
6 May 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: HyperFlex HX Software
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Root Compromise -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-1498 CVE-2021-1497
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpR
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Cisco HyperFlex HX Command Injection Vulnerabilities
Priority: Critical
Advisory ID: cisco-sa-hyperflex-rce-TjjNrkpR
First Published: 2021 May 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvx36014 CSCvx36019 CSCvx37435
CVE Names: CVE-2021-1497 CVE-2021-1498
CWEs: CWE-78
Summary
o Multiple vulnerabilities in the web-based management interface of Cisco
HyperFlex HX could allow an unauthenticated, remote attacker to perform
command injection attacks against an affected device.
For more information about these vulnerabilities, see the Details section
of this advisory.
Cisco has released software updates that address these vulnerabilities.
There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpR
Affected Products
o Vulnerable Products
These vulnerabilities affect Cisco devices if they are running a vulnerable
release of Cisco HyperFlex HX Software.
For information about which Cisco software releases are vulnerable, see the
Fixed Software section of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by these vulnerabilities.
Details
o The vulnerabilities are not dependent on one another. Exploitation of one
of the vulnerabilities is not required to exploit the other vulnerability.
In addition, a software release that is affected by one of the
vulnerabilities may not be affected by the other vulnerability.
Details about the vulnerabilities are as follows:
CVE-2021-1497: Cisco HyperFlex HX Installer Virtual Machine Command
Injection Vulnerability
A vulnerability in the web-based management interface of Cisco HyperFlex HX
Installer Virtual Machine could allow an unauthenticated, remote attacker
to perform a command injection attack against an affected device.
This vulnerability is due to insufficient validation of user-supplied
input. An attacker could exploit this vulnerability by sending a crafted
request to the web-based management interface. A successful exploit could
allow the attacker to execute arbitrary commands on an affected device as
the root user.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvx36014 , CSCvx36019
CVE ID: CVE-2021-1497
Security Impact Rating (SIR): Critical
CVSS Base Score: 9.8
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-1498: Cisco HyperFlex HX Data Platform Command Injection
Vulnerability
A vulnerability in the web-based management interface of Cisco HyperFlex HX
Data Platform could allow an unauthenticated, remote attacker to perform a
command injection attack against an affected device.
This vulnerability is due to insufficient validation of user-supplied
input. An attacker could exploit this vulnerability by sending a crafted
request to the web-based management interface. A successful exploit could
allow the attacker to execute arbitrary commands on an affected device as
the tomcat8 user.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvx37435
CVE ID: CVE-2021-1498
Security Impact Rating (SIR): High
CVSS Base Score: 7.3
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Workarounds
o There are no workarounds that address these vulnerabilities.
Fixed Software
o Cisco has released free software updates that address the vulnerabilities
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories 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.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
In the following table(s), the left column lists Cisco software releases.
The right column indicates whether a release is affected by the
vulnerabilities described in this advisory and the first release that
includes the fix for these vulnerabilities. Customers are advised to
upgrade to an appropriate fixed software release as indicated in this
section.
Cisco HyperFlex HX Release First Fixed Release
Earlier than 4.0 Migrate to 4.0(2e)
4.0 4.0(2e)
4.5 4.5(1b)
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 vulnerabilities described
in this advisory.
Source
o Cisco would like to thank Nikita Abramov and Mikhail Klyuchnikov of
Positive Technologies for reporting these vulnerabilities.
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-hyperflex-rce-TjjNrkpR
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-MAY-05 |
+----------+---------------------------+----------+--------+--------------+
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