Affected: Bitnami: grafana

Grafana is an open-source platform for monitoring and observability. In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions. AngularJS uses double curly braces for interpolation binding: {{ }} ex: {{constructor.constructor(‘alert(1)’)()}}. When the user follows the link and the page renders, the login button will contain the original link with a query parameter to force a redirect to the login page. The URL is not validated and the AngularJS rendering engine will execute the JavaScript expression contained in the URL. Users are advised to upgrade as soon as possible. If for some reason you cannot upgrade, you can use a reverse proxy or similar to block access to block the literal string {{ in the path.

Grafana is an open-source platform for monitoring and observability. In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions. AngularJS uses double curly braces for interpolation binding: {{ }} ex: {{constructor.constructor(‘alert(1)’)()}}. When the user follows the link and the page renders, the login button will contain the original link with a query parameter to force a redirect to the login page. The URL is not validated and the AngularJS rendering engine will execute the JavaScript expression contained in the URL. Users are advised to upgrade as soon as possible. If for some reason you cannot upgrade, you can use a reverse proxy or similar to block access to block the literal string {{ in the path.

Affected: npm: @grafana/data

Today we are releasing Grafana 8.2.3. This patch release includes an important security fix for an issue that affects all Grafana versions from 8.0.0-beta1.

[Grafana Cloud](https://grafana.com/cloud) instances have already been patched and an audit did not find any usage of this attack vector. [Grafana Enterprise](https://grafana.com/products/enterprise) customers were provided with updated binaries under embargo.

## CVE-2021-41174 XSS vulnerability on unauthenticated pages

### Summary

CVSS Score: 6.9 Medium CVSS:[CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N/E:U/RL:O/RC:R/CR:L/MAV:N/MAC:H/MPR:N/MUI:R/MS:C/MC:N/MI:H/MA:L](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N/E:U/RL:O/RC:R/CR:L/MAV:N/MAC:H/MPR:N/MUI:R/MS:C/MC:N/MI:H/MA:L)

We received a security report to security@grafana.com on 2021-10-21 about a vulnerability in Grafana regarding the XSS vulnerability.

It was later identified as affecting Grafana versions from 8.0.0-beta1 to 8.2.2. [CVE-2021-41174](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41174) has been assigned to this vulnerability.

### Impact

If an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser.

The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar.

There are two ways an unauthenticated user…

grafana-8.3.4-1.1 on GA media

Feature update for grafana

Affected: Ubuntu:16.04:LTS: grafana

Grafana is an open-source platform for monitoring and observability. In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions. AngularJS uses double curly braces for interpolation binding: {{ }} ex: {{constructor.constructor(‘alert(1)’)()}}. When the user follows the link and the page renders, the login button will contain the original link with a query parameter to force a redirect to the login page. The URL is not validated and the AngularJS rendering engine will execute the JavaScript expression contained in the URL. Users are advised to upgrade as soon as possible. If for some reason you cannot upgrade, you can use a reverse proxy or similar to block access to block the literal string {{ in the path.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Grafana ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.