CVE-2022-25737
📋 TL;DR
CVE-2022-25737 is an information disclosure vulnerability in Qualcomm modems where missing NULL pointer checks allow attackers to read sensitive data from packets received from the local network. This affects devices using vulnerable Qualcomm modem chipsets, potentially exposing device information and communications. The vulnerability requires local network access to exploit.
💻 Affected Systems
- Qualcomm modem chipsets
📦 What is this software?
Snapdragon X5 Lte Modem Firmware by Qualcomm
⚠️ Risk & Real-World Impact
Worst Case
Attackers could extract sensitive modem data, device identifiers, or potentially intercept communications, leading to privacy breaches or facilitating further attacks.
Likely Case
Information disclosure of device identifiers, network configuration data, or limited modem state information to local network attackers.
If Mitigated
Minimal impact with proper network segmentation and access controls preventing unauthorized local network access.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to the modem from the local network; no public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm April 2023 security bulletin for specific patched versions
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/april-2023-bulletin
Restart Required: Yes
Instructions:
1. Check with device manufacturer for firmware updates. 2. Apply Qualcomm-provided modem firmware patches. 3. Reboot device to activate patched firmware.
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable devices on separate network segments to limit local network attack surface
Firewall Rules
allImplement strict firewall rules to block unnecessary local network traffic to modem interfaces
🧯 If You Can't Patch
- Segment network to isolate vulnerable devices from untrusted systems
- Monitor network traffic for unusual packet patterns targeting modem interfaces
🔍 How to Verify
Check if Vulnerable:
Check device modem firmware version against Qualcomm's April 2023 bulletin; no simple command availableCheck Version:
Device-specific; typically requires manufacturer diagnostic tools or system settingsVerify Fix Applied:
Verify modem firmware has been updated to a version listed as patched in Qualcomm advisory📡 Detection & Monitoring
Log Indicators:
- Unusual modem error logs, unexpected packet processing failures
Network Indicators:
- Suspicious local network traffic patterns targeting modem ports
SIEM Query:
Search for network traffic to modem interfaces from unauthorized sources or unusual packet sizes