Q: Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. <br>🛠️ **Patch**: Commit `a77b308` fixes the issue. <br>📅 **Advisory**: GHSA-x8vp-gf4q-mw5j. <br>🔄 **Update**: Upgrade to Symfony 5.4.46+, 6.4.14+, or 7.1.7+.

Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Symfony's `SymfonyRuntime` allows attackers to inject environment variables via HTTP query strings.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: CWE-74 (OS Command Injection / Improper Neutralization).…

Question 3

Who is affected? (Versions/Components)

Accepted Answer

🏢 **Vendor**: Symfony.
📦 **Affected Versions**:
- v5.4.46 and earlier
- v6.4.14 and earlier
- v7.1.7 and earlier
⚠️ Note: Fixed in 5.4.46, 6.4.14, and 7.1.7.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

🕵️ **Attacker Actions**:
- Change `APP_ENV` (e.g., dev vs prod).
- Enable `APP_DEBUG` remotely.
🔓 **Privileges**: No direct RCE, but can leak stack traces or bypass security checks by forcing debug mode.…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

⚙️ **Threshold**: Medium.
🔑 **Requirement**: PHP directive `register_argc_argv` must be `On` in `php.ini`.
🌐 **Access**: No authentication needed (PR:N).
🎯 **Vector**: Network (AV:N).

Question 6

Is there a public Exp? (PoC/Wild Exploitation)

Accepted Answer

💻 **Public Exp?**: Yes.
📂 **PoC Available**: GitHub repo `Nyamort/CVE-2024-50340`.
🔎 **Scanner**: Nuclei templates exist.…

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**:
1. Check `php.ini` for `register_argc_argv = On`.
2. Verify Symfony version < 5.4.46/6.4.14/7.1.7.
3. Scan with Nuclei template `CVE-2024-50340.yaml`.
4.…

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

✅ **Fixed**: Yes.
🛠️ **Patch**: Commit `a77b308` fixes the issue.
📅 **Advisory**: GHSA-x8vp-gf4q-mw5j.
🔄 **Update**: Upgrade to Symfony 5.4.46+, 6.4.14+, or 7.1.7+.

Question 9

What if no patch? (Workaround)

Accepted Answer

🚧 **Workaround**:
1. Set `register_argc_argv = Off` in `php.ini`.
2. Disable `$_SERVER['argv']` parsing if possible.
3. Restrict access to non-SAPI runtimes if applicable.…

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

⏰ **Urgency**: Medium.
📌 **Priority**: Patch soon if `register_argc_argv` is On.
📉 **Risk**: Low CVSS, but debug mode leaks are dangerous.…

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CVE-2024-50340 — AI Deep Analysis Summary

Q1What is this vulnerability? (Essence + Consequences)

Q2Root Cause? (CWE/Flaw)

Q3Who is affected? (Versions/Components)

Q4What can hackers do? (Privileges/Data)

Q5Is exploitation threshold high? (Auth/Config)

Q6Is there a public Exp? (PoC/Wild Exploitation)

Q7How to self-check? (Features/Scanning)

Q8Is it fixed officially? (Patch/Mitigation)

Q9What if no patch? (Workaround)

Q10Is it urgent? (Priority Suggestion)

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