CVE-2024-1552 – This vulnerability involves incorrect code gene... (How to Fix)

Q: How do I fix CVE-2024-1552?

1. Open affected application (Firefox/Thunderbird). 2. Go to Help > About Firefox/Thunderbird. 3. Application will automatically check for and apply updates. 4. Restart the application when prompted.

Q: What is the severity of CVE-2024-1552?

CVE-2024-1552 has a CVSS score of 7.5 (HIGH). This vulnerability involves incorrect code generation in Mozilla products that could cause unexpected numeric conversions and undefined behavior on 32-bit ARM devices. It affects Firefox, Firefox ESR, and Thunderbird on vulnerable versions. Attackers could potentially exploit this to cause crashes or execute arbitrary code.

📋 TL;DR

This vulnerability involves incorrect code generation in Mozilla products that could cause unexpected numeric conversions and undefined behavior on 32-bit ARM devices. It affects Firefox, Firefox ESR, and Thunderbird on vulnerable versions. Attackers could potentially exploit this to cause crashes or execute arbitrary code.

💻 Affected Systems

Products:

Firefox
Firefox ESR
Thunderbird

Versions: Firefox < 123, Firefox ESR < 115.8, Thunderbird < 115.8

Operating Systems: Linux (32-bit ARM), Android (32-bit ARM), Other OS with 32-bit ARM architecture

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects 32-bit ARM architecture devices. x86, x64, and 64-bit ARM are not affected.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete system compromise on affected 32-bit ARM devices.

🟠

Likely Case

Application crash (denial of service) or memory corruption leading to limited code execution.

🟢

If Mitigated

No impact if devices are patched or not using affected Mozilla products on 32-bit ARM.

🌐 Internet-Facing: MEDIUM - Requires user interaction (visiting malicious website/opening malicious email) but affects widely used browsers.

🏢 Internal Only: LOW - Primarily affects client applications, not typically server infrastructure.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires user to visit malicious website or open malicious email content. No public exploit code identified at disclosure.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Firefox 123+, Firefox ESR 115.8+, Thunderbird 115.8+

Vendor Advisory: https://www.mozilla.org/security/advisories/mfsa2024-05/

Restart Required: Yes

Instructions:

1. Open affected application (Firefox/Thunderbird). 2. Go to Help > About Firefox/Thunderbird. 3. Application will automatically check for and apply updates. 4. Restart the application when prompted.

🔧 Temporary Workarounds

Disable JavaScript

all

Temporarily disable JavaScript to prevent exploitation via malicious websites

about:config > javascript.enabled = false

Use 64-bit version

all

Switch to 64-bit ARM or x86/x64 versions if hardware supports

🧯 If You Can't Patch

Restrict access to untrusted websites and email content
Implement application whitelisting to prevent execution of vulnerable versions

🔍 How to Verify

Check if Vulnerable:

Check application version: Firefox/Thunderbird > Help > About. If version is below patched versions and running on 32-bit ARM, system is vulnerable.

Check Version:

firefox --version or thunderbird --version

Verify Fix Applied:

Confirm application version is Firefox 123+, Firefox ESR 115.8+, or Thunderbird 115.8+.

📡 Detection & Monitoring

Log Indicators:

Application crash logs with memory access violations
Unexpected process termination of Firefox/Thunderbird

Network Indicators:

Connections to known malicious domains followed by application crashes

SIEM Query:

source="*firefox*" OR source="*thunderbird*" AND (event_type="crash" OR "segmentation fault" OR "access violation")

📊 Metadata

CVE ID: CVE-2024-1552

CVSS v3 Score: 7.5 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE: CWE-681

Published: February 20, 2024

Last Updated: March 27, 2025

🔗 References

https://bugzilla.mozilla.org/show_bug.cgi?id=1874502 Issue Tracking,Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/03/msg00000.html Mailing List
https://lists.debian.org/debian-lts-announce/2024/03/msg00001.html Mailing List
https://www.mozilla.org/security/advisories/mfsa2024-05/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-06/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-07/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1874502 Issue Tracking,Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/03/msg00000.html Mailing List
https://lists.debian.org/debian-lts-announce/2024/03/msg00001.html Mailing List
https://www.mozilla.org/security/advisories/mfsa2024-05/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-06/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-07/ Vendor Advisory

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🔗 Related Vulnerabilities

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