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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: OpenSSH has a **Race Condition** in its signal handler. 📉 **Consequences**: This flaw can lead to **Denial of Service (DoS)** (High Impact) and potentially limited **Confidentiality/Integrity** breaches.…
🛡️ **Root Cause**: **CWE-364** (Signal Handler Race Condition). The vulnerability stems from improper handling of signals within the OpenSSH process, creating a timing window for exploitation.
Q3Who is affected? (Versions/Components)
👥 **Affected**: **OpenSSH** (OpenBSD Secure Shell). Specifically, versions containing the flawed signal handling logic.…
💀 **Attacker Capabilities**:
- **DoS**: High availability impact (A:H). Can crash or hang the SSH service.
- **Data/Config**: Low impact on confidentiality/integrity (C:L, I:L).…
🔒 **Exploitation Threshold**: **High** (AC:H). Requires specific timing conditions.
- **Auth**: No privileges required (PR:N).
- **UI**: No user interaction needed (UI:N).
- **Network**: Remote (AV:N).
Q6Is there a public Exp? (PoC/Wild Exploitation)
📦 **Public Exploit**: **No**. The `pocs` field is empty. No public Proof of Concept (PoC) or wild exploitation code is currently available in the provided data.
Q7How to self-check? (Features/Scanning)
🔍 **Self-Check**:
1. Check OpenSSH version via `ssh -V`.
2. Monitor for unexpected SSH service crashes or hangs.
3. Use vulnerability scanners to detect the specific signal handler flaw signature.