Withdrawn by the publisher.

Affected: CleanStart: prometheus-node-exporter-fips

Multiple security vulnerabilities affect the prometheus-node-exporter-fips package. These issues are resolved in later releases. See references for individual vulnerability details.

Prometheus Exporter Toolkit is a utility package to build exporters. Prior to versions 0.7.2 and 0.8.2, if 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.

Affected: Go: github.com/prometheus/exporter-toolkit

### Impact

Prometheus and its exporters can be secured by a web.yml file that specifies usernames and hashed passwords for basic authentication.

Passwords are hashed with bcrypt, which means that even if you have access to the hash, it is very hard to find the original password back.

However, a flaw in the way this mechanism was implemented in the exporter toolkit makes it possible with people who know the hashed password to authenticate against Prometheus.

A request can be forged by an attacker to poison the internal cache used to cache the computation of hashes and make subsequent requests successful. This cache is used in both happy and unhappy scenarios in order to limit side channel attacks that could tell an attacker if a user is present in the file or not.

### Patches

The exporter-toolkit v0.7.3 and v0.8.2 have been released to address this issue.

### Workarounds

There is no workaround but attacker must have access to the hashed password, stored in disk, to bypass the authentication.

### Credit

We want to thank Lei Wan reporting this security issue.

golang-github-prometheus-node_exporter-1.5.0-1.1 on GA media

go-yaml: Denial of Service in go-yaml goutils: RandomAlphaNumeric and CryptoRandomAlphaNumeric are not as random as they should be mongo-go-driver: specific cstrings input may not be properly validated golang: out-of-bounds read in golang.org/x/text/language leads to DoS prometheus/client_golang: Denial of service using InstrumentHandlerCounter helm: Denial of service through through repository index file helm: Denial of service through schema file golang: crash in a golang.org/x/crypto/ssh server vault: insufficient certificate revocation list checking golang: net/http: excessive memory growth in a Go server accepting HTTP/2 requests x/net/http2/h2c: request smuggling golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding golang: crypto/tls: large handshake records may cause panics golang: net/http, mime/multipart: denial of service from excessive resource consumption exporter-toolkit: authentication bypass via cache poisoning vault: Vault’s Microsoft SQL Database Storage Backend Vulnerable to SQL Injection Via Configuration File hashicorp/vault: Vault’s PKI Issuer Endpoint Did Not Correctly Authorize Access to Issuer Metadata hashicorp/vault: Cache-Timing Attacks During Seal and Unseal Operations helm: getHostByName Function Information Disclosure containerd: Supplementary groups are not set up properly runc: Rootless runc makes `/sys/fs/cgroup` writable runc: volume mount race condition (regression of CVE-2019-19921) runc: AppArmor can be bypassed when `/pro…

Security update for SUSE Manager Client Tools

Affected: Ubuntu:16.04:LTS: prometheus, Ubuntu:18.04:LTS: prometheus, Ubuntu:20.04:LTS: prometheus, Ubuntu:22.04:LTS: golang-github-prometheus-exporter-toolkit, Ubuntu:Pro:22.04:LTS: prometheus, Ubuntu:Pro:24.04:LTS: prometheus, Ubuntu:25.10: prometheus, Ubuntu:Pro:26.04:LTS: prometheus

Prometheus Exporter Toolkit is a utility package to build exporters. Prior to versions 0.7.2 and 0.8.2, if 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.

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Prometheus ausnutzen, um Sicherheitsvorkehrungen zu umgehen.