Detection rules › Sigma

Outdated Dependency Or Vulnerability Alert Disabled

Status
test
Severity
high
Log source
product github, service audit
Author
Muhammad Faisal (@faisalusuf)
Source
github.com/SigmaHQ/sigma

Dependabot performs a scan to detect insecure dependencies, and sends Dependabot alerts. This rule detects when an organization owner disables Dependabot alerts private repositories or Dependabot security updates for all repositories.

MITRE ATT&CK coverage

Event coverage

Rules detecting the same action

Other rules on this platform that filter on the same API call or operation.

Rule body yaml

title: Outdated Dependency Or Vulnerability Alert Disabled
id: 34e1c7d4-0cd5-419d-9f1b-1dad3f61018d
status: test
description: |
    Dependabot performs a scan to detect insecure dependencies, and sends Dependabot alerts.
    This rule detects when an organization owner disables Dependabot alerts private repositories or Dependabot security updates for all repositories.
author: Muhammad Faisal (@faisalusuf)
date: 2023-01-27
references:
    - https://docs.github.com/en/code-security/dependabot/dependabot-alerts/about-dependabot-alerts
    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/managing-security-and-analysis-settings-for-your-organization
tags:
    - attack.initial-access
    - attack.t1195.001
logsource:
    product: github
    service: audit
    definition: 'Requirements: The audit log streaming feature must be enabled to be able to receive such logs. You can enable following the documentation here: https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/streaming-the-audit-log-for-your-enterprise#setting-up-audit-log-streaming'
detection:
    selection:
        action:
            - 'dependabot_alerts_new_repos.disable'
            - 'dependabot_alerts.disable'
            - 'dependabot_security_updates_new_repos.disable'
            - 'dependabot_security_updates.disable'
            - 'repository_vulnerability_alerts.disable'
    condition: selection
falsepositives:
    - Approved changes by the Organization owner. Please validate the 'actor' if authorized to make the changes.
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    action:
        - 'dependabot_alerts_new_repos.disable'
        - 'dependabot_alerts.disable'
        - 'dependabot_security_updates_new_repos.disable'
        - 'dependabot_security_updates.disable'
        - 'repository_vulnerability_alerts.disable'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
actioneq
  • dependabot_alerts.disable
  • dependabot_alerts_new_repos.disable
  • dependabot_security_updates.disable
  • dependabot_security_updates_new_repos.disable
  • repository_vulnerability_alerts.disable