CVE-2024-10458

What it actually does

A permission leak occurs when content loaded via embed or object elements from a trusted origin improperly grants or exposes permissions to an untrusted origin, bypassing same-origin restrictions in the browser or plugin environment.

Why it matters to the business

Organizations using outdated browser plugins on legacy systems face elevated risk of unauthorized data access or cross-site actions, potentially leading to compliance issues or operational disruption if exploited; prevalence in older Ubuntu environments increases exposure for dependent applications.

How an attack unfolds

An attacker hosts malicious content on an untrusted site and uses embed or object elements to reference resources from a trusted site, triggering the permission leak to perform unauthorized actions such as accessing privileged resources or executing code with elevated rights. Threat actors in espionage and financially motivated campaigns have targeted similar browser permission flaws.

How to fix it

Upgrade icedtea-web to version 1.5.3-0ubuntu0.14.04.1 or later on affected Ubuntu 14.04 systems; apply equivalent browser and plugin updates across the environment to close the permission handling gap.

How to confirm the fix worked

Verify package versions match the fixed release using system package managers; test embed and object element behavior in controlled browser sessions to confirm no permission leakage occurs between trusted and untrusted origins.

Typical attack path

1. Attacker crafts a webpage containing embed or object tags pointing to trusted site resources.
2. Victim browser loads the page, triggering the permission leak during element processing.
3. Leaked permissions allow cross-origin access or actions that should be blocked.
4. Attacker leverages the bypass to exfiltrate data, perform actions, or chain to further exploits.

How to detect it

Review web server and browser logs for unusual embed or object element requests crossing trust boundaries; examine plugin execution traces for permission-related anomalies in legacy icedtea-web deployments.

What your security team should do

• Prioritize immediate upgrade of icedtea-web to the specified fixed version on all Ubuntu 14.04 instances.
• Audit and restrict use of embed/object elements in internal web applications.
• Monitor for similar permission bypass patterns in other browser plugins and schedule broader updates.
• Review logging configurations to capture cross-origin embed/object activity for future detection.