CVE-2021-29622
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 19.6%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 19.56% probability · 97th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-601
- Affected
- prometheus/prometheus
- Source
- security-advisories@github.com
References
- https://github.com/prometheus/prometheus/releases/tag/v2.26.1Third Party Advisory
- https://github.com/prometheus/prometheus/releases/tag/v2.27.1Third Party Advisory
- https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7Third Party Advisory
- https://github.com/prometheus/prometheus/releases/tag/v2.26.1Third Party Advisory
- https://github.com/prometheus/prometheus/releases/tag/v2.27.1Third Party Advisory
- https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.