CVE-2022-39837 : Vulnerability Insights and Analysis

An issue was discovered in Connected Vehicle Systems Alliance (COVESA) dlt-daemon through 2.18.8. A crafted DLT file can cause a process crash due to a faulty DLT file parser, leading to a NULL pointer dereference.

Understanding CVE-2022-39837

This CVE identifies a vulnerability in COVESA dlt-daemon version 2.18.8 that allows the creation of a malicious DLT file to trigger a process crash.

What is CVE-2022-39837?

CVE-2022-39837 is a vulnerability in COVESA dlt-daemon that arises from a lack of validation checks in the DLT file parser, enabling the creation of a specially crafted file to crash the process. The issue results in a NULL pointer dereference, potentially leading to denial of service.

The Impact of CVE-2022-39837

Exploitation of this vulnerability could result in a denial of service condition, where an attacker could repeatedly crash the affected process using a malicious DLT file. This could disrupt normal operations and impact system availability.

Technical Details of CVE-2022-39837

This section delves into the specifics of the vulnerability, including the description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in COVESA dlt-daemon allows an attacker to craft a malicious DLT file that triggers a process crash due to a faulty DLT file parser. The issue stems from the absence of proper validation checks in the parsing mechanism.

Affected Systems and Versions

The vulnerability affects COVESA dlt-daemon version 2.18.8. As of the current information available, no specific vendor or product is identified as affected. It is crucial to monitor for updates and advisories related to this CVE.

Exploitation Mechanism

An attacker can exploit CVE-2022-39837 by creating a specially crafted DLT file and supplying it to the vulnerable dlt-daemon. Upon parsing the malicious file, the process crashes due to the NULL pointer dereference, causing a denial of service condition.

Mitigation and Prevention

To address CVE-2022-39837, immediate steps should be taken to mitigate the risk and prevent potential exploitation. Long-term security practices and the importance of timely patching and updates are highlighted.

Immediate Steps to Take

Organizations should consider filtering inputs, implementing file validation checks, and restricting access to vulnerable systems to prevent attacks leveraging this vulnerability. It is recommended to update or patch the affected software as soon as fixes are available.

Long-Term Security Practices

Incorporating secure coding practices, conducting regular security assessments, and staying informed about emerging threats are essential for enhancing overall cybersecurity posture and reducing the likelihood of successful attacks.

Patching and Updates

Stay vigilant for security advisories and updates from the vendor or maintainer of COVESA dlt-daemon. Applying patches promptly and keeping systems up to date with the latest releases can help protect against known vulnerabilities and bolster overall system security.