CVE-2018-9429

6.5 MEDIUM

📋 TL;DR

CVE-2018-9429 is an out-of-bounds read vulnerability in Android's ItemTable.cpp that could allow information disclosure without requiring elevated privileges. Attackers could potentially read sensitive data from memory, but user interaction is required for exploitation. This affects Android devices, particularly Google Pixel phones.

💻 Affected Systems

Products:
  • Android
  • Google Pixel phones
Versions: Android versions prior to July 2018 security patch
Operating Systems: Android
Default Config Vulnerable: ⚠️ Yes
Notes: Specifically affects the buildImageItemsIfPossible function in ItemTable.cpp; requires user interaction for exploitation.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Sensitive data from device memory could be leaked to an attacker, potentially exposing authentication tokens, encryption keys, or other confidential information.

🟠

Likely Case

Limited information disclosure from uninitialized memory regions, potentially exposing non-critical system data or application information.

🟢

If Mitigated

With proper patching, the vulnerability is eliminated; with user awareness, exploitation attempts could be avoided by not interacting with malicious content.

🌐 Internet-Facing: LOW - Requires user interaction and specific conditions; not directly exploitable over network without user action.
🏢 Internal Only: MEDIUM - Could be exploited via malicious apps or content within the organization, but still requires user interaction.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires user interaction and specific conditions to trigger the out-of-bounds read; no public exploit code is known.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Android security patch level July 5, 2018 or later

Vendor Advisory: https://source.android.com/docs/security/bulletin/pixel/2018-07-01

Restart Required: Yes

Instructions:

1. Check for system updates in Settings > System > Advanced > System update. 2. Install the July 2018 or later Android security patch. 3. Restart the device after installation.

🔧 Temporary Workarounds

Disable automatic image loading

android

Prevent automatic loading of images in vulnerable contexts to reduce attack surface

User awareness training

all

Educate users to avoid interacting with suspicious content or unknown applications

🧯 If You Can't Patch

  • Isolate affected devices from sensitive networks and data
  • Implement application whitelisting to prevent installation of potentially malicious apps

🔍 How to Verify

Check if Vulnerable:

Check Android security patch level in Settings > About phone > Android security patch level. If date is before July 5, 2018, device is vulnerable.

Check Version:

adb shell getprop ro.build.version.security_patch

Verify Fix Applied:

Verify Android security patch level shows July 5, 2018 or later date.

📡 Detection & Monitoring

Log Indicators:

  • Unusual application crashes related to image processing
  • Memory access violation logs in system logs

Network Indicators:

  • No specific network indicators as exploitation requires local user interaction

SIEM Query:

No specific SIEM query available due to lack of public exploit details

🔗 References

📤 Share & Export