Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS12ODZ4LTVmbTMtNXA3as4AA1eS

Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint

Impact

An attacker with the permission to perform POST requests on the /api/v1/alerts endpoint could be able to execute arbitrary JavaScript code on the users of Prometheus Alertmanager.

Patches

Users can upgrade to Alertmanager v0.2.51.

Workarounds

Users can setup a reverse proxy in front of the Alertmanager web server to forbid access to the /api/v1/alerts endpoint.

References

N/A

Permalink: https://github.com/advisories/GHSA-v86x-5fm3-5p7j
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS12ODZ4LTVmbTMtNXA3as4AA1eS
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 9 months ago
Updated: 6 months ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-v86x-5fm3-5p7j, CVE-2023-40577
References:

• https://github.com/prometheus/alertmanager/security/advisories/GHSA-v86x-5fm3-5p7j
• https://nvd.nist.gov/vuln/detail/CVE-2023-40577
• https://lists.debian.org/debian-lts-announce/2023/10/msg00011.html
• https://github.com/advisories/GHSA-v86x-5fm3-5p7j

Repository: https://github.com/prometheus/alertmanager
Blast Radius: 19.3

Affected Packages