CVE-2018-20375 : What You Need to Know

A vulnerability has been found in version 0.9.27 of Tiny C Compiler (TinyCC or TCC) that triggers an out-of-bounds write in the sym_pop function.

Understanding CVE-2018-20375

This CVE involves a specific manipulation of a source file that leads to a critical security issue.

overview

What is CVE-2018-20375?

The vulnerability in Tiny C Compiler version 0.9.27 allows for an out-of-bounds write of 8 bytes in the sym_pop function within the tccgen.c file.

The Impact of CVE-2018-20375

The vulnerability can be exploited by compiling a specially crafted source file, potentially leading to arbitrary code execution or a denial of service.

Technical Details of CVE-2018-20375

Details about the vulnerability and its implications.

Vulnerability Description

The issue arises during the compilation process of a manipulated source file, resulting in an out-of-bounds write in the sym_pop function within tccgen.c.

Affected Systems and Versions

Product: Tiny C Compiler (TinyCC or TCC)
Version: 0.9.27

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a specific source file to trigger the out-of-bounds write in the sym_pop function.

Mitigation and Prevention

Measures to address and prevent the CVE-2018-20375 vulnerability.

Immediate Steps to Take

Update Tiny C Compiler to a patched version that addressesCVE-2018-20375.
Avoid compiling untrusted or manipulated source files.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement code reviews and security testing in the development process.

Patching and Updates

Stay informed about security advisories and updates from Tiny C Compiler's official sources.
Apply patches and updates as soon as they are available to mitigate the risk of exploitation.