CVE-2024-4141

What it actually does

Out-of-bounds array write triggered by an invalid character code in a Type 1 font, caused by a bounds check that modern compilers optimize away.

Why it matters to the business

Limited local denial of service on systems processing untrusted documents with the vulnerable parser; low urgency given no known exploitation or ransomware use and minimal EPSS.

How an attack unfolds

An attacker crafts a malicious document containing a Type 1 font with an invalid character code that bypasses the optimized-away bounds check, causing memory corruption when the document is processed locally.

How to fix it

Upgrade parse-community/parse-server to the commit 9d502269c50320cb8b677f37f9ac3735d7a53481 or later; rebuild any downstream packages that embed the vulnerable parser.

How to confirm the fix worked

Confirm the installed version is at or above the fixed commit; test parsing of sample documents containing Type 1 fonts with invalid character codes for absence of crashes or memory errors.

Typical attack path

1. Obtain local access or ability to supply a document to the vulnerable parser
2. Craft a Type 1 font with an invalid character code that defeats the bounds check
3. Trigger processing of the document to induce the out-of-bounds write
4. Achieve limited denial-of-service impact

How to detect it

Review application or system logs for unexpected crashes or segmentation faults during document parsing; search process execution history for invocations of the parser on untrusted files.

What your security team should do

• Apply the listed fixed commit to all parse-community/parse-server deployments within normal change windows
• Monitor EPSS and KEV status for any future increase in exploit maturity
• Include the vulnerable parser in routine software bill-of-materials reviews