CVE-2022-21702 Cross site scripting in Grafana proxy

What is CVE-2022-21702?

CVE-2022-21702 is a medium-severity cross-site scripting vulnerability in Fedoraproject Fedora, published on 8 Feb 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Grafana is an open-source platform for monitoring and observability. In affected versions an attacker could serve HTML content thru the Grafana datasource or plugin proxy and trick a user to visit this HTML page using a specially crafted link and execute a Cross-site Scripting (XSS) attack. The attacker could either compromise an existing datasource for a specific Grafana instance or either set up its own public service and instruct anyone to set it up in their Grafana instance. To be impacted, all of the following must be applicable. For the data source proxy: A Grafana HTTP-based datasource configured with Server as Access Mode and a URL set, the attacker has to be in control of the HTTP server serving the URL of above datasource, and a specially crafted link pointing at the attacker controlled data source must be clicked on by an authenticated user. For the plugin proxy: A Grafana HTTP-based app plugin configured and enabled with a URL set, the attacker has to be in control of the HTTP server serving the URL of above app, and a specially crafted link pointing at the attacker controlled plugin must be clocked on by an authenticated user. For the backend plugin resource: An attacker must be able to navigate an authenticated user to a compromised plugin through a crafted link. Users are advised to update to a patched version. There are no known workarounds for this vulnerability.

Weakness: CWE-79

Which versions are affected by CVE-2022-21702?

5 open source packages ship an affected version, including github.com/grafana/grafana and grafana. It affects 3 products.

Products include Fedoraproject Fedora, Grafana Grafana, Netapp E-Series Performance Analyzer.

How do I fix CVE-2022-21702?

Upgrade github.com/grafana/grafana to a fixed version for your release line: 7.5.15 or 8.3.5.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2022-21702 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-21702 exists.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-grafana-2022-21702, GHSA-xc3p-28hw-q24g, OESA-2022-1599, OESA-2022-2077, UBUNTU-CVE-2022-21702.