CVE-2019-19062 : Vulnerability Insights and Analysis

An issue of memory leakage has been discovered in the crypto_report() function within the file crypto/crypto_user_base.c in the Linux kernel up to version 5.3.11. Exploiting this vulnerability, an attacker can induce a denial of service (excessive memory usage) by triggering failures in the crypto_report_alg() function. This issue is identified as CID-ffdde5932042.

Understanding CVE-2019-19062

This CVE involves a memory leak vulnerability in the Linux kernel that can lead to a denial of service attack.

What is CVE-2019-19062?

CVE-2019-19062 is a memory leak vulnerability in the crypto_report() function in the Linux kernel up to version 5.3.11. Attackers can exploit this flaw to cause a denial of service by triggering failures in the crypto_report_alg() function.

The Impact of CVE-2019-19062

This vulnerability can be exploited by attackers to consume excessive memory, leading to a denial of service condition on affected systems.

Technical Details of CVE-2019-19062

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability lies in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through version 5.3.11, allowing attackers to cause a denial of service through memory consumption by triggering crypto_report_alg() failures.

Affected Systems and Versions

Linux kernel versions up to 5.3.11 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by triggering failures in the crypto_report_alg() function, leading to excessive memory consumption and a denial of service condition.

Mitigation and Prevention

Protecting systems from CVE-2019-19062 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the Linux kernel or respective vendors to mitigate the vulnerability.
Monitor system resources for any signs of excessive memory usage that could indicate a potential attack.

Long-Term Security Practices

Regularly update and patch the Linux kernel and associated software to prevent known vulnerabilities.
Implement proper access controls and monitoring to detect and respond to suspicious activities.

Patching and Updates

Ensure that the Linux kernel is regularly updated to the latest version to address security vulnerabilities.