Finding Grafana instances
A zero-day vulnerability for Grafana, a popular analytics and visualization software, was leaked this week. This vulnerability provides attackers a path traversal attack vector that can result in data disclosure, resulting in access to files containing confidential information or credentials. Tracked as CVE-2021-43798 with a “high” CVSS score of 7.5, this path traversal vulnerability resides in the installed plugins path logic for a Grafana instance (e.g.,
<grafana_host_url>/public/plugins/<plugin-id>). Because Grafana installs with plugins by default, Grafana versions v8.0.0-beta1 through v8.3.0 are all vulnerable (Grafana Cloud is reportedly not vulnerable).
This vulnerability was originally disclosed to Grafana on December 3rd (prior to its leak as an 0-day). Grafana made patched versions available the day of the leak and advised anyone running a vulnerable version to update to a patched version as soon as possible. If upgrading isn’t an option, Grafana provides mitigation strategy as well.
As a part of good cyber hygiene, you should shut down public access to Grafana servers (unless it is necessary).
How to find Grafana instances
From the Asset Inventory, use the following pre-built query to locate potentially vulnerable Grafana instances within your network:
As always, any prebuilt queries we create are available from our Queries Library. Check out the library for other useful inventory queries.
June 3, 2023
Finding MOVEit File Transfer Services
Reports of active exploitation of a zero-day vulnerability in the MOVEit file transfer software are making the rounds this week. The vendor, Progress Software, has released an advisory and this issue has now been assigned CVE-2023-34362. Attackers are abusing a SQL injection …Read More
June 2, 2023
Finding Barracuda Email Security Gateways
Exploitation of Barracuda Email Security Gateway (ESG) appliances has made the news recently, including on-going investigation into the attacks. Leveraging a zero-day vulnerability as far back as October 2022, attackers compromised ESG targets to deploy malware that created …Read More
May 31, 2023
Finding Zyxel Network Devices
Last month, Zyxel disclosed a remote command execution vulnerability affecting a handful of their product families. This vulnerability has been assigned CVE-2023-28771, and with a CVSSv3 score of 9.8, this vulnerability is considered highly critical. Attackers who send a …Read More