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**: SandboxJS < 0.8.29 has a **Sandbox Escape** flaw. π **Consequences**: Attackers bypass security controls, pollute `Object.prototype`, and cause persistent cross-sandbox damage. π₯
Q2Root Cause? (CWE/Flaw)
π **Root Cause**: **CWE-74** (Improper Neutralization). The flaw stems from **masking `hasOwnProperty`** on the sandbox object.β¦
π₯ **Affected**: **SandboxJS** by developer **nyariv**. π¦ **Version**: All versions **prior to 0.8.29**. β οΈ
Q4What can hackers do? (Privileges/Data)
π **Attacker Capabilities**: Full **Privilege Escalation** within the sandbox. They can access **`__proto__`**, pollute global objects, and execute **Cross-Sandbox Attacks**. π
Q5Is exploitation threshold high? (Auth/Config)
π **Exploitation Threshold**: **LOW**. CVSS indicates **AV:N** (Network), **AC:L** (Low Complexity), **PR:N** (No Privileges), **UI:N** (No User Interaction). Easy to exploit remotely! π
Q6Is there a public Exp? (PoC/Wild Exploitation)
π **Public Exploit**: **No**. The `pocs` field is empty. π« While the flaw is clear, no public PoC or wild exploitation code is currently available. π΅οΈ
Q7How to self-check? (Features/Scanning)
π **Self-Check**: Scan for **SandboxJS** installations. Check version numbers. Look for usage of `hasOwnProperty` without proper isolation in custom sandbox implementations. π§ͺ
Q8Is it fixed officially? (Patch/Mitigation)
β **Fixed**: **Yes**. Patched in **version 0.8.29**. π οΈ Reference: GitHub commit `67cb186` and GHSA advisory `GHSA-jjpw-65fv-8g48`. π
Q9What if no patch? (Workaround)
π‘οΈ **No Patch Workaround**: **Not Recommended**. Since it allows prototype pollution, temporary mitigations are risky. **Upgrade immediately** if possible. If stuck, isolate the environment strictly. π§±
Q10Is it urgent? (Priority Suggestion)
π₯ **Urgency**: **CRITICAL**. CVSS Score is **High** (likely 9.8+). Network-accessible, no auth needed, and causes severe data integrity issues. Patch NOW! β³