CVE-2018-18500 is a security vulnerability that affects Firefox web browsers before version 65.0. It is a use-after-free vulnerability that occurs while parsing an HTML5 stream, which can allow attackers to execute arbitrary code on the affected system or cause a denial-of-service attack.
A "use-after-free" vulnerability occurs when an application attempts to access a memory location that has already been freed. This can occur when the application fails to properly manage memory allocation and deallocation, leading to memory corruption and potentially allowing an attacker to execute arbitrary code.
In the case of CVE-2018-18500, the vulnerability is triggered when Firefox attempts to parse an HTML5 stream that contains specially crafted content. This can cause a memory location to be freed prematurely, leading to a use-after-free condition that can be exploited by attackers.
To exploit this vulnerability, an attacker would need to trick a user into visiting a malicious website or opening a specially crafted HTML file. Once the exploit is successful, the attacker could execute arbitrary code on the affected system, potentially allowing them to steal sensitive information, install malware, or cause a denial-of-service attack.
customelements_poc.html
delay_http_server.py
A "use-after-free" vulnerability occurs when an application attempts to access a memory location that has already been freed. This can occur when the application fails to properly manage memory allocation and deallocation, leading to memory corruption and potentially allowing an attacker to execute arbitrary code.
In the case of CVE-2018-18500, the vulnerability is triggered when Firefox attempts to parse an HTML5 stream that contains specially crafted content. This can cause a memory location to be freed prematurely, leading to a use-after-free condition that can be exploited by attackers.
To exploit this vulnerability, an attacker would need to trick a user into visiting a malicious website or opening a specially crafted HTML file. Once the exploit is successful, the attacker could execute arbitrary code on the affected system, potentially allowing them to steal sensitive information, install malware, or cause a denial-of-service attack.
customelements_poc.html
delay_http_server.py