Overview
This report details a significant vulnerability in Amazon Ion’s Java implementation. The issue, identified as CVE-2024-21634, primarily affects applications that utilize the `ion-java` library to deserialize Ion text encoded data. If successfully exploited, this vulnerability can cause denial-of-service (DoS) issues, resulting in the potential for system compromise or data leakage. It is therefore vital for organizations using the affected versions of the `ion-java` library to take immediate action to mitigate this risk.
Vulnerability Summary
CVE ID: CVE-2024-21634
Severity: High (7.5 CVSS)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
A new way to communicate
Ameeba Chat is built on encrypted identity, not personal profiles.
Message, call, share files, and coordinate with identities kept separate.
- • Encrypted identity
- • Ameeba Chat authenticates access
- • Aliases and categories
- • End-to-end encrypted chat, calls, and files
- • Secure notes for sensitive information
Private communication, rethought.
Product | Affected Versions
Amazon Ion (Java implementation) | Prior to version 1.10.5
How the Exploit Works
An attacker could craft Ion data that, when loaded by the affected application and processed using the `IonValue` model, results in a `StackOverflowError` originating from the `ion-java` library. This error can lead to a denial-of-service condition, potentially causing system compromise or data leakage.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This pseudocode represents a malicious Ion data that could cause a `StackOverflowError` when processed by the `ion-java` library.
IonValue maliciousData = IonSystemBuilder.standard().build().newReader("{ 'malicious_payload': '...' }");
IonValue result = maliciousData.get(0);Mitigation
The most effective mitigation for this vulnerability is to apply the patch provided by the vendor, which is included in `ion-java` version 1.10.5. If this is not immediately feasible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. However, these should not be viewed as long-term solutions, and the patch should be applied as soon as possible.
As a general security best practice, avoid loading data that originated from an untrusted source or that could have been tampered with.