CVE-2019-18218 : Security Advisory and Response

A vulnerability in the function cdf_read_property_info in the file cdf.c in versions up to 5.37 can lead to a heap-based buffer overflow, allowing an out-of-bounds write.

Understanding CVE-2019-18218

This CVE describes a specific vulnerability in the file library that can be exploited to trigger a heap-based buffer overflow.

What is CVE-2019-18218?

The vulnerability in the cdf_read_property_info function in the file cdf.c up to version 5.37 allows an attacker to perform a heap-based buffer overflow by not restricting the number of CDF_VECTOR elements, resulting in a 4-byte out-of-bounds write.

The Impact of CVE-2019-18218

The vulnerability can be exploited by a remote attacker to execute arbitrary code or cause a denial of service (DoS) condition on the affected system.

Technical Details of CVE-2019-18218

The technical details of the CVE provide insight into the specific aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from the lack of limitations on the quantity of CDF_VECTOR elements, leading to a heap-based buffer overflow and a 4-byte out-of-bounds write.

Affected Systems and Versions

Affected system: File library versions up to 5.37

Exploitation Mechanism

The vulnerability can be exploited remotely by an attacker to trigger the buffer overflow and potentially execute malicious code.

Mitigation and Prevention

Mitigation strategies and preventive measures to address the CVE.

Immediate Steps to Take

Apply vendor patches or updates promptly to mitigate the vulnerability.
Implement network security measures to restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update software and libraries to the latest versions to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Check for and apply patches provided by the vendor to fix the vulnerability and enhance system security.