CVE-2019-16277 : Vulnerability Insights and Analysis
Learn about CVE-2019-16277, a heap-based buffer overflow vulnerability in PicoC 2.1 that could allow attackers to execute arbitrary code or cause denial of service. Find mitigation steps and preventive measures here.
PicoC 2.1 has a heap-based buffer overflow vulnerability in the StringStrcpy function, leading to potential security risks.
Understanding CVE-2019-16277
In this CVE, a specific function in PicoC version 2.1 is susceptible to a heap-based buffer overflow, which can be exploited to execute arbitrary code or crash the application.
What is CVE-2019-16277?
The vulnerability exists in the StringStrcpy function within the cstdlib/string.c file of PicoC version 2.1, triggered when called from the ExpressionParseFunctionCall function in the expression.c file.
The Impact of CVE-2019-16277
The heap-based buffer overflow in PicoC 2.1 could allow an attacker to execute arbitrary code, leading to a potential compromise of the affected system or a denial of service.
Technical Details of CVE-2019-16277
Vulnerability Description
The vulnerability arises due to improper handling of data within the StringStrcpy function, potentially leading to a buffer overflow.
Affected Systems and Versions
- Product: PicoC
- Version: 2.1
Exploitation Mechanism
The vulnerability can be exploited by crafting a specific input that triggers the overflow when the vulnerable function is called.
Mitigation and Prevention
Immediate Steps to Take
- Apply the vendor-supplied patch or update to version 2.2 or later.
- Restrict network access to vulnerable systems.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Conduct security assessments and code reviews to identify and address vulnerabilities.
Patching and Updates
Ensure timely installation of patches and updates provided by the software vendor to mitigate the vulnerability.