{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/pipeline-security/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["CircleCI"],"_cs_severities":["high"],"_cs_tags":["circleci","devsecops","pipeline-security","cloud"],"_cs_type":"advisory","_cs_vendors":["CircleCI"],"content_html":"\u003cp\u003eThis threat brief addresses the risk of disabling security jobs within CircleCI pipelines. CircleCI, a popular CI/CD platform, is used by many organizations to automate their software development lifecycle. An attacker who gains sufficient privileges within a CircleCI organization could modify pipeline configurations to disable mandatory security jobs. This allows malicious code to bypass critical security checks, potentially introducing vulnerabilities into production environments. The impact could range from data breaches and system downtime to reputational damage. This brief outlines how detection engineers can proactively identify and respond to such attempts.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eInitial Access:\u003c/strong\u003e The attacker gains unauthorized access to a CircleCI user account or acquires sufficient permissions to modify pipeline configurations.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eReconnaissance:\u003c/strong\u003e The attacker identifies mandatory security jobs within the CircleCI workflows using the CircleCI UI or API, noting the \u003ccode\u003eworkflow_name\u003c/code\u003e and associated \u003ccode\u003ejob_name\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eConfiguration Modification:\u003c/strong\u003e The attacker modifies the CircleCI pipeline configuration (likely via the \u003ccode\u003e.circleci/config.yml\u003c/code\u003e file) to disable or bypass the identified mandatory security jobs. This might involve commenting out the job definition, removing it from the workflow, or adding conditions that prevent its execution.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eCode Commit:\u003c/strong\u003e The attacker commits the modified configuration file to the associated Git repository, triggering a new pipeline execution. The \u003ccode\u003evcs.url\u003c/code\u003e field provides the URL to the commit and related changes.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eBypassed Security Checks:\u003c/strong\u003e The pipeline executes without running the mandatory security jobs, allowing potentially malicious code to proceed through the CI/CD process unchecked.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eDeployment:\u003c/strong\u003e The unchecked code is deployed to staging or production environments.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eImpact:\u003c/strong\u003e Depending on the nature of the malicious code, the impact could include data breaches, system compromise, or service disruption.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe successful disabling of security jobs in CircleCI can have significant consequences. A single compromised pipeline could lead to the introduction of vulnerable code into production, impacting thousands of users and critical infrastructure. Potential damage includes data breaches, system downtime, reputational damage, and financial loss. Organizations in all sectors utilizing CircleCI for their CI/CD processes are at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the provided Sigma rule to detect instances where mandatory security jobs are not executed within CircleCI workflows; tune the rule for your environment.\u003c/li\u003e\n\u003cli\u003eInvestigate alerts triggered by the Sigma rule, focusing on the \u003ccode\u003euser\u003c/code\u003e and the specific \u003ccode\u003eworkflow_name\u003c/code\u003e where the security job was disabled.\u003c/li\u003e\n\u003cli\u003eReview CircleCI access logs for suspicious account activity that might indicate unauthorized access.\u003c/li\u003e\n\u003cli\u003eImplement multi-factor authentication (MFA) for all CircleCI user accounts to reduce the risk of account compromise.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-circleci-security-job-disable/","summary":"An attacker disables mandatory security jobs within CircleCI pipelines to bypass security checks, potentially leading to data breaches, system downtime, and compromised pipeline integrity.","title":"CircleCI Security Job Disablement","url":"https://feed.craftedsignal.io/briefs/2024-01-circleci-security-job-disable/"}],"language":"en","title":"CraftedSignal Threat Feed - Pipeline-Security","version":"https://jsonfeed.org/version/1.1"}