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AUSCERT External Security Bulletin Redistribution
ESB-2020.1327.2
Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS
Director Express for Big Data
20 April 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco UCS Director
Cisco UCS Director Express for Big Data
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3252 CVE-2020-3251 CVE-2020-3250
CVE-2020-3249 CVE-2020-3248 CVE-2020-3247
CVE-2020-3243 CVE-2020-3240 CVE-2020-3239
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-ucsd-mult-vulns-UNfpdW4E
Revision History: April 20 2020: Information on exploit code availability
April 16 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express
for Big Data
Priority: Critical
Advisory ID: cisco-sa-ucsd-mult-vulns-UNfpdW4E
First Published: 2020 April 15 16:00 GMT
Last Updated: 2020 April 17 19:27 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvs53493 CSCvs53496 CSCvs53500 CSCvs53502 CSCvs56399 CSCvs56400
CSCvs56401 CSCvs69022 CSCvs69171 CSCvt39489 CSCvt39526 CSCvt39535
CSCvt39555 CSCvt39561 CSCvt39565 CSCvt39575 CSCvt39580
CVE-2020-3239 CVE-2020-3240 CVE-2020-3243 CVE-2020-3247
CVE-2020-3248 CVE-2020-3249 CVE-2020-3250 CVE-2020-3251
CVE-2020-3252
CWE-20
CWE-22
CWE-264
CVSS Score:
9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o Multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco
UCS Director Express for Big Data may allow a remote attacker to bypass
authentication or conduct directory traversal attacks on 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-ucsd-mult-vulns-UNfpdW4E
Affected Products
o Vulnerable Products
The following table lists Cisco products that are affected by one or more
of the vulnerabilities that are described in this advisory:
+-------------+---------------------------------+-----------------+-------+
| Product | Cisco Bug IDs | Vulnerable | Fixed |
| | | Release(s) |Release|
+-------------+---------------------------------+-----------------+-------+
| | |6.0.0.0, 6.0.0.1,| |
| | |6.0.1.0, 6.0.1.1,| |
| | |6.0.1.2, 6.0.1.3 | |
| | | | |
| |CSCvs53496 , CSCvs53493 |6.5.0.0, 6.5.0.1,| |
|Cisco UCS |CSCvs53500 , CSCvs53502 |6.5.0.2, 6.5.0.3,| |
|Director |CSCvs56400 , CSCvs56401 |6.5.0.4 |6.7.4.0|
| |CSCvs56399 , CSCvs69171 | | |
| |CSCvs69022 |6.6.0.0, 6.6.1.0,| |
| | |6.6.2.0 | |
| | | | |
| | |6.7.0.0, 6.7.1.0,| |
| | |6.7.2.0, 6.7.3.0 | |
+-------------+---------------------------------+-----------------+-------+
|Cisco UCS |CSCvt39561 , CSCvt39555 | | |
|Director |CSCvt39580 , CSCvt39565 |3.7.3.0 and |3.7.4.0|
|Express for |CSCvt39535 , CSCvt39526 |earlier | |
|Big Data |CSCvt39575 , CSCvt39489 | | |
+-------------+---------------------------------+-----------------+-------+
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 Vulnerability Details
Details about the vulnerabilities are as follows.
Cisco UCS Director and UCS Director Express for Big Data Authentication
Bypass Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an unauthenticated, remote attacker to
bypass authentication and execute arbitrary actions with administrative
privileges on an affected device.
The vulnerability is due to insufficient access control validation. An
attacker could exploit this vulnerability by sending a crafted request to
the REST API. A successful exploit could allow the attacker to interact
with the REST API with administrative privileges.
Bug ID(s): CSCvs53496 , CSCvt39580
CVE ID: CVE-2020-3243
Security Impact Rating (SIR): Critical
CVSS Base Score: 9.8
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Cisco UCS Director and UCS Director Express for Big Data Remote Code
Execution Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an authenticated, remote attacker to
execute arbitrary code with root privileges on the underlying operating
system.
The vulnerability is due to improper input validation. An attacker could
exploit this vulnerability by crafting a malicious file and sending it to
the REST API. A successful exploit could allow the attacker to open a
remote shell and execute code with root privileges.
Bug ID(s): CSCvs56399 , CSCvt39555
CVE ID: CVE-2020-3240
Security Impact Rating (SIR): High
CVSS Base Score: 8.8
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Cisco UCS Director and UCS Director Express for Big Data Authentication
Bypass Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an unauthenticated, remote attacker to
bypass authentication and execute API calls on an affected device.
The vulnerability is due to insufficient access control validation. An
attacker could exploit this vulnerability by sending a request to the REST
API endpoint. A successful exploit could allow the attacker to interact
with the REST API and cause a potential Denial of Service (DoS) condition
on the affected device.
Bug ID(s): CSCvs53493 , CSCvt39575
CVE ID: CVE-2020-3250
Security Impact Rating (SIR): High
CVSS Base Score: 8.6
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Cisco UCS Director and UCS Director Express for Big Data Directory
Traversal Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an authenticated, remote attacker to
conduct directory traversal attacks on an affected device.
The vulnerability is due to insufficient validation of user-supplied input
to the REST API of the affected software. An attacker could exploit this
vulnerability by sending a crafted request to the REST API. A successful
exploit could allow the attacker to execute code on the system.
Bug ID(s): CSCvs69171 , CSCvt39489
CVE ID: CVE-2020-3251
Security Impact Rating (SIR): High
CVSS Base Score: 8.1
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Cisco UCS Director and UCS Director Express for Big Data Directory
Traversal Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an authenticated, remote attacker to
conduct directory traversal attacks on an affected device.
The vulnerability is due to insufficient validation of user-supplied input
to the REST API of the affected software. An attacker could exploit this
vulnerability by sending a crafted request to the REST API. A successful
exploit could allow the attacker to perform a Denial of Service (DoS)
attack on the affected device.
Bug ID(s): CSCvs56401 , CSCvt39526
CVE ID: CVE-2020-3249
Security Impact Rating (SIR): High
CVSS Base Score: 8.1
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Cisco UCS Director and UCS Director Express for Big Data Directory
Traversal Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an authenticated, remote attacker to
conduct directory traversal attacks on an affected device.
The vulnerability is due to insufficient validation of user-supplied input
to the REST API of the affected software. An attacker could exploit this
vulnerability by sending a crafted request to the REST API. A successful
exploit could allow the attacker to execute code with root privileges.
Bug ID(s): CSCvs56400 , CSCvt39535
CVE ID: CVE-2020-3248
Security Impact Rating (SIR): High
CVSS Base Score: 8.1
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Cisco UCS Director and UCS Director Express for Big Data Directory
Traversal Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an authenticated, remote attacker to
conduct directory traversal attacks on an affected device.
The vulnerability is due to insufficient validation of user-supplied input
to the REST API of the affected software. An attacker could exploit this
vulnerability by sending a malicious file to the REST API. A successful
exploit could allow the attacker to write or execute arbitrary files on the
system.
Bug ID(s): CSCvs53502 , CSCvt39565
CVE ID: CVE-2020-3247
Security Impact Rating (SIR): High
CVSS Base Score: 8.1
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Cisco UCS Director and UCS Director Express for Big Data Directory
Traversal Vulnerability
A vulnerability in the REST API of Cisco UCS Director and UCS Director
Express for Big Data could allow an authenticated, remote attacker to
conduct directory traversal attacks on an affected device.
The vulnerability is due to insufficient validation of user-supplied input
to the REST API of the affected software. An attacker could exploit this
vulnerability by sending a malicious zip file to the REST API. A successful
exploit could allow the attacker to write or execute arbitrary files on the
system with full administrative privileges.
Bug ID(s): CSCvs53500 , CSCvt39561
CVE ID: CVE-2020-3239
Security Impact Rating (SIR): High
CVSS Base Score: 8.1
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Cisco UCS Director Directory Traversal Vulnerability
A vulnerability in the REST API endpoint of Cisco UCS Director could allow
an authenticated, remote attacker to conduct directory traversal attacks on
an affected device.
The vulnerability is due to insufficient validation of user-supplied input
to the REST API of the affected software. An attacker could exploit this
vulnerability by sending a crafted request to the REST API. A successful
exploit could allow the attacker to read arbitrary files on the system.
Bug ID(s): CSCvs69022
CVE ID: CVE-2020-3252
Security Impact Rating (SIR): Medium
CVSS Base Score: 6.5
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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 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.
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
Cisco fixed this vulnerability in UCS Director Release 6.7.4.0 and UCS
Director Express for Big Data Release 3.7.4.0.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is aware that
proof-of-concept exploit code is available for the vulnerabilities that are
described in this advisory.
Source
o Cisco would like to thank Steven Seeley (mr_me) of Source Incite working
with Trend Micro Zero Day Initiative for reporting the following
vulnerabilities:
CVE-2020-3243
CVE-2020-3240
CVE-2020-3250
CVE-2020-3239
CVE-2020-3247
CVE-2020-3248
CVE-2020-3249
Cisco would like to thank Steven Seeley (mr_me) of Source Incite for
reporting the following vulnerabilities:
CVE-2020-3251
CVE-2020-3252
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-ucsd-mult-vulns-UNfpdW4E
Revision History
o +---------+-----------------------+----------------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+-----------------------+----------------+--------+-------------+
| | Updated information | Exploitation | | |
| 1.1 | about the | and Public | Final | 2020-APR-17 |
| | availability of | Announcements | | |
| | exploit code. | | | |
+---------+-----------------------+----------------+--------+-------------+
| 1.0 | Initial public | - | Final | 2020-APR-15 |
| | release. | | | |
+---------+-----------------------+----------------+--------+-------------+
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