CVE-2024-44097

9.8 CRITICAL

📋 TL;DR

This vulnerability allows attackers to perform man-in-the-middle attacks on TLS connections due to improper certificate validation. Any application or system using the affected TLS implementation is vulnerable to interception of encrypted communications. Attackers can read, modify, or inject data in supposedly secure connections.

💻 Affected Systems

Products:
  • Google products using the affected TLS implementation
Versions: Specific versions not detailed in reference
Operating Systems: All platforms using affected implementation
Default Config Vulnerable: ⚠️ Yes
Notes: Affects applications that rely on the vulnerable TLS library for secure communications

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of all TLS-protected communications, allowing attackers to steal sensitive data (credentials, financial information, personal data), inject malicious content, or impersonate legitimate services.

🟠

Likely Case

Data interception in targeted attacks, credential theft, and session hijacking for applications using the vulnerable TLS implementation.

🟢

If Mitigated

Limited impact if proper network segmentation, certificate pinning, or alternative validation mechanisms are in place.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires network position to intercept TLS connections

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not specified in reference

Vendor Advisory: https://support.google.com/product-documentation/answer/14950962?sjid=9489879942601373169-NA

Restart Required: Yes

Instructions:

1. Review Google advisory for affected products. 2. Apply latest security updates. 3. Restart affected services. 4. Verify certificate validation is functioning correctly.

🔧 Temporary Workarounds

Implement Certificate Pinning

all

Hard-code expected certificate fingerprints to prevent man-in-the-middle attacks

Network Segmentation

all

Isolate vulnerable systems from untrusted networks

🧯 If You Can't Patch

  • Monitor network traffic for unusual TLS handshake patterns
  • Implement additional authentication layers for sensitive operations

🔍 How to Verify

Check if Vulnerable:

Test TLS connections with invalid certificates - if connections succeed, system is vulnerable

Check Version:

Check application version against patched versions in vendor advisory

Verify Fix Applied:

Verify TLS connections fail when presented with invalid or untrusted certificates

📡 Detection & Monitoring

Log Indicators:

  • Failed certificate validation attempts
  • Unexpected certificate authorities

Network Indicators:

  • TLS connections with unusual certificate chains
  • MITM attack patterns in network traffic

SIEM Query:

tls.handshake AND (certificate.validation.failed OR certificate.chain.unexpected)

🔗 References

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