`ofs.c` refers to a piece of computer code, specifically a C program, that exploits a vulnerability in the OverlayFS file system on Ubuntu Linux. This vulnerability allows an attacker to gain root privileges on the local system, effectively taking full control of the system.
The technique used by `ofs.c` is known as a "local root exploit," which means that the attacker must have local access to the system in order to execute the exploit. This could be accomplished through a variety of means, such as physical access to the machine or through remote access to a user account with limited privileges.
Once the exploit is executed, the attacker is able to gain root access to the system, which provides them with complete control over all aspects of the system. This includes the ability to access and modify sensitive data, install malicious software, and carry out further attacks on other systems connected to the network.
It's worth noting that this vulnerability was patched by Ubuntu in 2019, so systems that are up-to-date with security patches should not be vulnerable to this exploit. However, it serves as a reminder of the importance of keeping systems up-to-date with the latest security patches to mitigate the risk of such vulnerabilities being exploited.
The technique used by `ofs.c` is known as a "local root exploit," which means that the attacker must have local access to the system in order to execute the exploit. This could be accomplished through a variety of means, such as physical access to the machine or through remote access to a user account with limited privileges.
Once the exploit is executed, the attacker is able to gain root access to the system, which provides them with complete control over all aspects of the system. This includes the ability to access and modify sensitive data, install malicious software, and carry out further attacks on other systems connected to the network.
It's worth noting that this vulnerability was patched by Ubuntu in 2019, so systems that are up-to-date with security patches should not be vulnerable to this exploit. However, it serves as a reminder of the importance of keeping systems up-to-date with the latest security patches to mitigate the risk of such vulnerabilities being exploited.