CVE-2022-22893 in JerryScript
Summary
by MITRE • 01/21/2022
Jerryscript 3.0.0 was discovered to contain a stack overflow via vm_loop.lto_priv.304 in /jerry-core/vm/vm.c.
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Analysis
by VulDB Data Team • 01/26/2022
The vulnerability identified as CVE-2022-22893 represents a critical stack overflow condition within the Jerryscript JavaScript engine version 3.0.0. This issue manifests in the vm_loop.lto_priv.304 function located within the jerry-core/vm/vm.c source file, demonstrating a fundamental flaw in the engine's memory management and execution flow control. The stack overflow occurs during the virtual machine's loop execution, indicating a potential pathway for malicious code injection or system compromise through improper handling of JavaScript execution contexts.
This vulnerability falls under the CWE-121 stack-based buffer overflow category, specifically affecting the jerry-core component of the JavaScript engine. The flaw arises from inadequate bounds checking during the virtual machine's loop processing, where recursive or iterative operations fail to properly validate input parameters or execution state limits. The issue is particularly concerning as it exists within the core execution engine, meaning any JavaScript code processed through this engine could potentially trigger the overflow condition, making it a high-impact vulnerability for applications relying on Jerryscript for scripting capabilities.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as stack overflows can potentially enable arbitrary code execution when exploited properly. Attackers could craft malicious JavaScript payloads designed to trigger the specific vm_loop.lto_priv.304 function path, leading to stack corruption that might allow for privilege escalation or complete system compromise. The vulnerability affects systems using Jerryscript 3.0.0 in embedded applications, IoT devices, or any environment where JavaScript execution is processed through this particular engine version.
From an ATT&CK framework perspective, this vulnerability maps to T1059.007 for JavaScript execution and potentially T1068 for local privilege escalation if the target system allows for such exploitation paths. The attack surface includes any application or service that utilizes Jerryscript 3.0.0 for JavaScript processing, particularly those in resource-constrained environments where memory safety mechanisms may be less robust. Organizations using embedded systems, web applications, or IoT devices that depend on this JavaScript engine should prioritize immediate remediation.
The recommended mitigation strategy involves upgrading to a patched version of Jerryscript that addresses the stack overflow condition in vm_loop.lto_priv.304. Additionally, implementing input validation and sanitization measures can help reduce the risk of exploitation, though the most effective solution remains the application of the vendor-provided security patch. System administrators should also consider implementing runtime protections such as stack canaries, address space layout randomization, and other memory safety mechanisms to reduce the exploitability of such vulnerabilities in the event that patching cannot be immediately implemented.