Vulnerability Details CVE-2021-29622
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.866
EPSS Ranking 99.4%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 5.8
References
- https://github.com/prometheus/prometheus/releases/tag/v2.26.1
- https://github.com/prometheus/prometheus/releases/tag/v2.27.1
- 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
- https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7
Products affected by CVE-2021-29622
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cpe:2.3:a:prometheus:prometheus:2.23.0
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cpe:2.3:a:prometheus:prometheus:2.24.0
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cpe:2.3:a:prometheus:prometheus:2.24.1
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cpe:2.3:a:prometheus:prometheus:2.25.0
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cpe:2.3:a:prometheus:prometheus:2.25.1
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cpe:2.3:a:prometheus:prometheus:2.25.2
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cpe:2.3:a:prometheus:prometheus:2.26.0
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cpe:2.3:a:prometheus:prometheus:2.27.0