This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis β
Q1What is this vulnerability? (Essence + Consequences)
π¨ **Essence**: A Cross-Site Scripting (XSS) flaw in Jenkins Plugin Build Step. π **Consequences**: Attackers inject malicious JavaScript via job names.β¦
π **Root Cause**: Missing input sanitization. π **Flaw**: The plugin fails to escape JavaScript expressions in the **Pipeline Snippet Generator**.β¦
π’ **Vendor**: Jenkins Project. π¦ **Product**: Jenkins Pipeline: Build Step Plugin. π **Affected Versions**: Version **2.18** and all earlier versions. β οΈ If you are on v2.18 or below, you are at risk.
Q4What can hackers do? (Privileges/Data)
π» **Capabilities**: Execute arbitrary JavaScript in the context of the logged-in user. π΅οΈ **Impact**: Steal cookies, session tokens, or personal data.β¦
βοΈ **Threshold**: Medium. π **Auth**: Likely requires the attacker to have access to the Jenkins UI or trick a user into viewing a crafted job name.β¦
π’ **Public Exploit**: No specific standalone PoC code is listed in the provided data. π° **References**: Discussed in **oss-security** mailing list and official Jenkins Security Advisory.β¦
π **Check**: Inspect Jenkins UI for **Pipeline Snippet Generator**. π§ͺ **Test**: Create a job with a name containing `<script>alert(1)</script>`.β¦
π‘οΈ **Fix**: Upgrade the **Jenkins Pipeline: Build Step Plugin**. β **Target**: Version **2.19** or later (implied by '2.18 and earlier'). π₯ **Action**: Update via Jenkins Plugin Manager immediately. π
Q9What if no patch? (Workaround)
π§ **Workaround**: Avoid using special characters or script tags in **Job Names**. π« **Mitigation**: Restrict access to the Pipeline Snippet Generator.β¦