Security update for golang-github-prometheus-alertmanager SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:4481-1 Final 1 1 2025-12-18T12:18:50Z current 2025-12-18T12:18:50Z 2025-12-18T12:18:50Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for golang-github-prometheus-alertmanager This update for golang-github-prometheus-alertmanager fixes the following issues: - Update to version 0.28.1 (jsc#PED-13285): * Improved performance of inhibition rules when using Equal labels. * Improve the documentation on escaping in UTF-8 matchers. * Update alertmanager_config_hash metric help to document the hash is not cryptographically strong. * Fix panic in amtool when using --verbose. * Fix templating of channel field for Rocket.Chat. * Fix rocketchat_configs written as rocket_configs in docs. * Fix usage for --enable-feature flag. * Trim whitespace from OpsGenie API Key. * Fix Jira project template not rendered when searching for existing issues. * Fix subtle bug in JSON/YAML encoding of inhibition rules that would cause Equal labels to be omitted. * Fix header for slack_configs in docs. * Fix weight and wrap of Microsoft Teams notifications. - Upgrade to version 0.28.0: * CVE-2025-47908: Bump github.com/rs/cors (bsc#1247748). * Templating errors in the SNS integration now return an error. * Adopt log/slog, drop go-kit/log. * Add a new Microsoft Teams integration based on Flows. * Add a new Rocket.Chat integration. * Add a new Jira integration. * Add support for GOMEMLIMIT, enable it via the feature flag --enable-feature=auto-gomemlimit. * Add support for GOMAXPROCS, enable it via the feature flag --enable-feature=auto-gomaxprocs. * Add support for limits of silences including the maximum number of active and pending silences, and the maximum size per silence (in bytes). You can use the flags --silences.max-silences and --silences.max-silence-size-bytes to set them accordingly. * Muted alerts now show whether they are suppressed or not in both the /api/v2/alerts endpoint and the Alertmanager UI. - Upgrade to version 0.27.0: * API: Removal of all api/v1/ endpoints. These endpoints now log and return a deprecation message and respond with a status code of 410. * UTF-8 Support: Introduction of support for any UTF-8 character as part of label names and matchers. * Discord Integration: Enforce max length in message. * Metrics: Introduced the experimental feature flag --enable-feature=receiver-name-in-metrics to include the receiver name. * Metrics: Introduced a new gauge named alertmanager_inhibition_rules that counts the number of configured inhibition rules. * Metrics: Introduced a new counter named alertmanager_alerts_supressed_total that tracks muted alerts, it contains a reason label to indicate the source of the mute. * Discord Integration: Introduced support for webhook_url_file. * Microsoft Teams Integration: Introduced support for webhook_url_file. * Microsoft Teams Integration: Add support for summary. * Metrics: Notification metrics now support two new values for the label reason, contextCanceled and contextDeadlineExceeded. * Email Integration: Contents of auth_password_file are now trimmed of prefixed and suffixed whitespace. * amtool: Fixes the error scheme required for webhook url when using amtool with --alertmanager.url. * Mixin: Fix AlertmanagerFailedToSendAlerts, AlertmanagerClusterFailedToSendAlerts, and AlertmanagerClusterFailedToSendAlerts to make sure they ignore the reason label. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-4481,SUSE-SLE-Manager-Tools-15-2025-4481,SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-4481,SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2025-4481,SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-LTS-2025-4481,openSUSE-SLE-15.6-2025-4481 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-20254481-1/ Link for SUSE-SU-2025:4481-1 https://lists.suse.com/pipermail/sle-security-updates/2025-December/023615.html E-Mail link for SUSE-SU-2025:4481-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1247748 SUSE Bug 1247748 https://www.suse.com/security/cve/CVE-2025-47908/ SUSE CVE CVE-2025-47908 page SUSE Linux Enterprise Module for Package Hub 15 SP6 SUSE Linux Enterprise Module for Package Hub 15 SP7 SUSE Manager Client Tools 15 SUSE Manager Proxy LTS 4.3 openSUSE Leap 15.6 golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 as a component of SUSE Manager Client Tools 15 golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 as a component of SUSE Manager Proxy LTS 4.3 golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 as a component of openSUSE Leap 15.6 Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service. CVE-2025-47908 SUSE Linux Enterprise Module for Package Hub 15 SP6:golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 SUSE Linux Enterprise Module for Package Hub 15 SP7:golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 SUSE Manager Client Tools 15:golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 SUSE Manager Proxy LTS 4.3:golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 openSUSE Leap 15.6:golang-github-prometheus-alertmanager-0.28.1-150100.4.28.2 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-20254481-1/ https://www.suse.com/security/cve/CVE-2025-47908.html CVE-2025-47908 https://bugzilla.suse.com/1247746 SUSE Bug 1247746