CVE-2021-29622 Information

Description

Prometheus is an open-source monitoring system and time series database. In 2.23.0 Prometheus changed its default UI to the New ui. To ensure a seamless transition the URL’s prefixed by /new redirect to /. Due to a bug in the code it is possible for an attacker to craft an URL that can redirect to any other URL in the /new endpoint. If a user visits a prometheus server with a specially crafted address they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0 the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7 https://github.com/prometheus/prometheus/releases/tag/v2.26.1 https://github.com/prometheus/prometheus/releases/tag/v2.27.1

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1