CVE-2023-33108: Critical Memory Corruption Vulnerability in Graphics Driver

Overview

A critical vulnerability, labeled as CVE-2023-33108, is causing a stir in the cybersecurity community. This vulnerability is deeply rooted in the Graphics Driver and is related to the destruction of a context with KGSL_GPU_AUX_COMMAND_TIMELINE objects queued. This memory corruption vulnerability has a far-reaching potential, affecting any system or device using the compromised Graphics Driver, ultimately leading to potential system compromise or data leakage.
This vulnerability matters significantly because of its high potential for exploitation and the considerable damage it can cause. With a CVSS Severity Score of 8.4, it’s clear that this vulnerability poses a severe risk to system integrity, confidentiality, and availability. The use of graphics drivers is prevalent across multiple platforms, making this a widespread concern where effective mitigation is urgently needed.

Vulnerability Summary

CVE ID: CVE-2023-33108
Severity: Critical – CVSS score 8.4
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Graphics Driver | All versions prior to the latest patch

How the Exploit Works

The exploit takes advantage of a flaw in the memory management of the Graphics Driver. When a context with KGSL_GPU_AUX_COMMAND_TIMELINE objects is destroyed, memory corruption occurs. This can be exploited remotely by an attacker, without requiring any user interaction or privileges. The attacker can send specifically crafted data that triggers the memory corruption, potentially allowing for arbitrary code execution or data leakage.

Conceptual Example Code

Here is a conceptual pseudocode example of how the vulnerability might be exploited:

function exploit(target) {
var malicious_object = create_KGSL_GPU_AUX_COMMAND_TIMELINE();
target.GraphicsDriver.destroyContext(malicious_object);
}

In this pseudocode, `create_KGSL_GPU_AUX_COMMAND_TIMELINE()` represents a function that would create a malicious KGSL_GPU_AUX_COMMAND_TIMELINE object. `destroyContext()` is a function meant to destroy such a context, but in this case, it leads to memory corruption due to the malicious object.
Please note that this is a conceptual example and doesn’t represent an actual exploit code. It is provided to help understand the vulnerability, not to facilitate malicious activities.