Headline
Gentoo Linux Security Advisory 202401-15
Gentoo Linux Security Advisory 202401-15 - A vulnerability has been found in Prometheus SNMP Exporter which could allow for authentication bypass. Versions greater than or equal to 0.24.1 are affected.
Gentoo Linux Security Advisory GLSA 202401-15
https://security.gentoo.org/
Severity: Low
Title: Prometheus SNMP Exporter: Basic Authentication Bypass
Date: January 12, 2024
Bugs: #883649
ID: 202401-15
Synopsis
A vulnerability has been found in Prometheus SNMP Exporter which could
allow for authentication bypass.
Background
The Prometheus SNMP Exporter is the recommended way to expose SNMP data
in a format which Prometheus can ingest.
Affected packages
Package Vulnerable Unaffected
app-metrics/snmp_exporter < 0.24.1 >= 0.24.1
Description
A vulnerability has been discovered in Prometheus SNMP Exporter. Please
review the CVE identifier referenced below for details.
Impact
A user who knows the password hash of a user capable of performing HTTP
basic authentication with a vulnerable exporter can use the hash to
successfully authenticate as that user via cache manipulation, without
knowing the password from which the hash was derived.
Workaround
There is no known workaround at this time.
Resolution
All Prometheus SNMP Exporter users should upgrade to the latest version:
emerge --sync
emerge --ask --oneshot --verbose “>=app-metrics/snmp_exporter-0.24.1”
References
[ 1 ] CVE-2022-46146
https://nvd.nist.gov/vuln/detail/CVE-2022-46146
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202401-15
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users’ machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
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Prometheus Exporter Toolkit is a utility package to build exporters. Prior to versions 0.7.2 and 0.8.2, i someone has access to a Prometheus web.yml file and users' bcrypted passwords, they can bypass security by poisoning the built-in authentication cache. Versions 0.7.2 and 0.8.2 contain a fix for the issue. There is no workaround, but attacker must have access to the hashed password to use this functionality.