Use-After-Free Vulnerability in Session Cache Restoration

Executive Summary

This vulnerability occurs when restoring a session from cache. The process uses a pointer from the serialized session data in a free operation without validating it first. An attacker who can poison the session cache by injecting a crafted session could trigger an arbitrary free operation, potentially leading to memory corruption or other unintended behavior.

Exploitation requires the attacker to be able to inject a malicious session into the cache and for the application to call specific session restore APIs that use this vulnerable free operation.

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Impact Analysis

This vulnerability can impact you by allowing an attacker to cause an arbitrary free operation in memory, which may lead to memory corruption, application crashes, or potentially enable further exploitation such as code execution or denial of service.

However, exploitation requires the attacker to have the ability to inject crafted sessions into the cache and for the application to invoke specific session restore APIs, which may limit the attack surface.

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