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AUSCERT External Security Bulletin Redistribution
ESB-2020.1432
BIG-IQ Grafana vulnerability
24 April 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: BIG-IQ Centralized Management
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-5868
Original Bulletin:
https://support.f5.com/csp/article/K37130415
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K37130415: BIG-IQ Grafana vulnerability CVE-2020-5868
Security Advisory
Original Publication Date: Apr 24, 2020
Applies to (see versions):
o Product: BIG-IQ, BIG-IQ Centralized Management
? 7.1.0, 7.0.0, 6.1.0, 6.0.1, 6.0.0, 5.4.0, 5.3.0, 5.2.0
o Product: BIG-IP, BIG-IP AAM, BIG-IP AFM, BIG-IP Analytics, BIG-IP APM,
BIG-IP ASM, BIG-IP DNS, BIG-IP FPS, BIG-IP GTM, BIG-IP Link Controller,
BIG-IP LTM, BIG-IP PEM
? 15.1.0, 15.0.1, 15.0.0, 14.1.2, 14.1.0, 13.1.3, 13.1.1, 13.1.0, 12.1.5,
12.1.4, 12.1.3, 12.1.2, 12.1.1, 12.1.0, 11.6.5, 11.6.4, 11.6.3, 11.6.2,
11.6.1
o Product: Traffix SDC
? 5.1.0, 5.0.0
Security Advisory Description
A remote access vulnerability has been discovered that may allow a remote user
to run shell commands on affected systems using HTTP requests to the BIG-IQ
user interface. (CVE-2020-5868)
Impact
A remote attacker may be able to leverage the Grafana component to run local
shell commands on the system.
Security Advisory Status
F5 Product Development has assigned ID 896877 (BIG-IQ) to this vulnerability.
To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. To determine if your
release is known to be vulnerable, the components or features that are affected
by the vulnerability, and for information about releases, point releases, or
hotfixes that address the vulnerability, refer to the following table. For more
information about security advisory versioning, refer to K51812227:
Understanding Security Advisory versioning.
+-------------------+------+----------+----------+----------+------+----------+
| | |Versions |Fixes | |CVSSv3|Vulnerable|
|Product |Branch|known to |introduced|Severity |score^|component |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |15.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |14.x |None |Not | | | |
|BIG-IP (LTM, AAM, | | |applicable| | | |
|AFM, Analytics, +------+----------+----------+ | | |
|APM, ASM, DNS, FPS,|13.x |None |Not |Not |None |None |
|GTM, Link | | |applicable|vulnerable| | |
|Controller, PEM) +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |7.0.0 |7.1.0 | | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |6.0.0 - |None | | | |
|Management | |6.1.0 | |Critical |9.8 |Grafana |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Fixes introduced in column. If the table lists only an older version
than what you are currently running, or does not list a non-vulnerable version,
then no upgrade candidate currently exists.
Mitigation
BIG-IQ uses the Grafana component in the following pages:
Monitoring > EVENTS > DoS > DoS Summary
o DoS Active Attacks Summary - Last 24 Hours
Monitoring > DASHBOARDS > DDoS > DNS Overview
o DDoS DNS Summary - Last 24 Hours
o DDoS DNS Summary - Current Attacks
By default, the Grafana process runs on the BIG-IQ system. As a result, the
BIG-IQ versions listed in Versions known to be vulnerable column of the Status
table in the previous section are vulnerable regardless of whether or not you
use these affected DoS features.
If you are using these pages, please contact F5 Support for potential
solutions.
If you are not using these pages, to mitigate this vulnerability, you can
disable Grafana access by performing the following procedure:
Impact of action: Performing the following procedure disables the DoS and
DDoS Monitoring pages.
1. Use a text editor such as vi to edit the /etc/webd/webd.conf file. If using
vi enter the following command:
vi /etc/webd/webd.conf
2. Enter i to enter insert mode.
3. Using a # character, comment out the upstream grafana configuration block.
For example:
#upstream grafana {
# server 127.0.0.1:3000;
#}
4. Using a # character, comment out the location /mgmt/grafana/ configuration
block.
For example:
#location /mgmt/grafana/ {
# proxy_pass http://grafana/;
# proxy_set_header Host $hostname:$proxy_port;
# proxy_set_header X-Real-IP $remote_addr;
# proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
# proxy_connect_timeout 5s;
# proxy_read_timeout 300s;
# # completely disallow all access through the grafana data source proxy
# # TODO: Move this to the /mgmt/ block after the auth proxy is in place
# location /mgmt/grafana/api/datasources/proxy/ {
# deny all;
# return 404;
# }
#}
5. If using vi, select ESC to exit insert mode.
6. Save and close the file. If using vi, enter the following:
:wq
7. Restart the BIG-IQ webd web server by entering the following command:
bigstart restart webd
Supplemental Information
o K51812227: Understanding Security Advisory versioning
o K41942608: Overview of Security Advisory articles
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
o K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix and point release matrix
o K167: Downloading software and firmware from F5
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
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