CVE-2019-8457

What it actually does

Heap out-of-bounds read in the rtreenode() function when handling invalid rtree tables in SQLite versions 3.6.0 through 3.27.2.

Why it matters to the business

Applications relying on SQLite across Linux distributions and embedded systems risk crashes or unauthorized memory disclosure, potentially exposing sensitive data in high-prevalence database environments.

How an attack unfolds

An attacker supplies a crafted SQLite database containing an invalid rtree table to a vulnerable application and triggers processing via query or API call to trigger the out-of-bounds read.

How to fix it

Upgrade SQLite to a version newer than 3.27.2. Apply available security updates for affected products including Ubuntu Linux, Fedora, and openSUSE Leap.

How to confirm the fix worked

Confirm the deployed SQLite version exceeds 3.27.2; test with databases containing malformed rtree tables to verify absence of out-of-bounds access.

Typical attack path

1. Create a malicious SQLite database file embedding an invalid rtree table structure
2. Deliver the database file to a target application that uses vulnerable SQLite
3. Invoke database operations or queries that exercise the rtreenode() function
4. Trigger the heap out-of-bounds read to disclose adjacent memory contents

How to detect it

Review application logs for SQLite errors related to rtree table processing or unexpected crashes when handling untrusted database files.

What your security team should do

• Apply SQLite updates immediately given the high CVSS score and stable EPSS of 0.45
• Inventory all applications and systems using SQLite to identify exposure
• Replace vulnerable database instances in production environments before further exploitation attempts