CVE-2025-48593 PoC — Google Android 安全漏洞

Source

Associated Vulnerability

Description

"A single malicious packet can own your device." — Android Security Team, Nov 2025

Readme

# CVE-2025-48593
"A single malicious packet can own your device." — Android Security Team, Nov 2025

# CVE-2025-48593 Zero-Click Remote Code Execution in Android System

> "A single malicious packet can own your device." — Android Security Team, Nov 2025

---

## Vulnerability Snapshot

| Attribute           | Details                           |
| ------------------- | --------------------------------- |
| CVE ID              | CVE-2025-48593                    |
| Severity            | Critical (RCE, Zero-Click)        |
| CVSS (Est.)         | 9.8 (Pending NVD confirmation)    |
| Attack Vector       | Network (Remote)                  |
| User Interaction    | ❌ None Required                   |
| Privileges Required | ❌ None                            |
| Exploit Status      | No public PoC (as of Nov 4, 2025) |

---

## ⚠️ Affected Devices & Versions

* Android 13 (All builds Oct 2023 – Oct 2025)
* Android 14 (All builds Oct 2023 – Oct 2025)
* Android 15 (All builds up to Oct 2025)
* ⚠️ Android 16 (Builds Jul 2025 – Oct 2025)

> Unpatched devices are fully exposed.

---

## ⚡ How It Works (Technical Breakdown)

```c
// Simplified pseudocode of vulnerable path
void process_system_packet(Packet *p) {
    if (p->type == MALICIOUS_TYPE) {
        // ⚠️ No bounds check!
        memcpy(kernel_buffer, p->payload, p->size);  // CVE-2025-48593
        execute_payload(); // RCE achieved
    }
}
```

Root Cause:

> Improper input validation in the `System` component allows remote attackers to overflow buffers and inject executable code.

---

## Immediate Mitigation Steps

```bash
# 1. Check your patch level
adb shell getprop ro.build.version.security_patch
# → Should show: 2025-11-01 or 2025-11-05
```

### User Actions

1. Update Now
   ⚙️ Settings → System → System Update
2. Enable Play Protect
   Google Play → Play Protect → Scan
3. Avoid Untrusted Networks
   Disable Wi-Fi/Bluetooth in public

### Enterprise / OEM

* Apply 2025-11-05 security patch via AOSP
* Monitor: Android Security Bulletin – November 2025

---

## Related CVEs (Same Bulletin)

| CVE              | Severity | Type | Affected        |
| ---------------- | -------: | ---- | --------------- |
| `CVE-2025-48581` |     High | EoP  | Android 16 only |

---

## Stay Updated

* NVD Entry: nvd.nist.gov/vuln/detail/CVE-2025-48593
* Android Bulletin: source.android.com/security/bulletin
* AOSP Patch: Search `CVE-2025-48593` in Android Git

---

# CVE-2025-48593 Exploitation Schema

### Zero-Click Remote Code Execution in Android System

```mermaid
%%{init: {'theme': 'base', 'themeVariables': { 'fontSize': '13px', 'fontFamily': 'Consolas, monospace', 'primaryColor': '#d32f2f', 'primaryTextColor': '#fff', 'lineColor': '#ff8a80', 'secondaryColor': '#1976d2'}}}%%
sequenceDiagram
    participant Attacker as  Attacker
    participant Network as  Network
    participant Device as  Android Device
    participant Kernel as  Kernel Space
    Attacker->>Network: Send Malicious Packet<br/>(No authentication)
    Network->>Device: Deliver Packet<br/>(Zero interaction)
    Device->>Device: process_system_packet(pkt)
    Note over Device: ⚠️ No bounds check!
    Device->>Kernel: memcpy(kernel_buffer, payload, size)
    Kernel-->>Device: Buffer Overflow
    Device->>Kernel: Execute Injected Code
    Kernel->>Attacker: Remote Shell / Data Exfiltration
    Note over Device,Kernel:  Full RCE Achieved
```

---

## Technical Attack Chain

|              Stage | Action                                  | Requirement             |
| -----------------: | --------------------------------------- | ----------------------- |
| 1. Packet Crafting | Attacker builds malformed system packet | None                    |
|    2. Transmission | Sent over Wi-Fi, Bluetooth, or cellular | Network access          |
|       3. Reception | Device receives packet (no user action) | Unpatched Android 13–16 |
|      4. Processing | `System` component parses input         | Vulnerable code path    |
|        5. Overflow | `memcpy()` writes beyond buffer         | Input validation flaw   |
|       6. Execution | Shellcode runs in kernel context        | Zero-click RCE          |
|     7. Persistence | Install malware, exfiltrate data, pivot | Full control            |

---

## 🛡️ Defense-in-Depth Schema

```mermaid
graph LR
    subgraph "Prevention Layers"
        P1[ Apply Nov 2025 Patch]
        P2[ Disable Unused Radios]
        P3[️ Google Play Protect]
        P4[ Avoid Public Wi-Fi]
    end

    subgraph "Detection"
        D1[ Monitor Anomalous Traffic]
        D2[⚠️ Watch for Kernel Crashes]
        D3[ Endpoint Forensics]
    end

    subgraph "Response"
        R1[ Isolate Device]
        R2[ Force OTA Update]
        R3[ Report to Google/OEM]
    end

    P1 & P2 & P3 & P4 --> D1 & D2 & D3 --> R1 & R2 & R3

    style P1 fill:#1b5e20, color:#fff
    style R1 fill:#b71c1c, color:#fff
```

---

## Patch Application Flow

```mermaid
%%{init: {'theme': 'neutral'}}%%
graph TD
    A[Google Releases Patch<br/>Nov 1/5, 2025] --> B{OEM Integration}
    B --> C[Samsung, OnePlus, etc.]
    B --> D[Google Pixel]
    C --> E[Monthly Security Update]
    D --> F[Pixel OTA Push]
    E & F --> G[User Installs Update]
    G --> H[Patch Level: 2025-11-01+]
```

File Snapshot

 [4.0K]  /data/pocs/14e897e018884d1845dbcc63f8f24ff830c95650
└── [5.2K]  README.md

1 directory, 1 file

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