CVE-2023-26075 : What You Need to Know

This CVE-2023-26075 article provides detailed information about a security issue discovered in Samsung Mobile Chipset and Baseband Modem Chipset for various Exynos models. The vulnerability arises from an intra-object overflow in the 5G MM message codec due to insufficient parameter validation during the decoding of the Service Area List.

Understanding CVE-2023-26075

This section delves into the specifics of CVE-2023-26075, outlining its impact, technical details, and mitigation strategies.

What is CVE-2023-26075?

The CVE-2023-26075 vulnerability affects Samsung Exynos chipsets used in mobile and baseband modem devices. It stems from a coding flaw in the 5G MM message codec, leading to a potential security risk due to inadequate input validation.

The Impact of CVE-2023-26075

With a CVSS v3.1 base score of 7.6, this security issue is classified as high severity. The vulnerability could be exploited by attackers to achieve remote code execution or disrupt the availability of affected devices, posing a significant threat to user data and system integrity.

Technical Details of CVE-2023-26075

This section provides a deeper insight into the vulnerability, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in the 5G MM message codec within Samsung Exynos chipsets is caused by a lack of proper parameter validation during the decoding process, leading to an intra-object overflow. This flaw can be exploited by malicious actors to execute arbitrary code or launch denial-of-service attacks.

Affected Systems and Versions

The CVE-2023-26075 vulnerability impacts multiple Samsung chipsets, including Exynos 850, Exynos 980, Exynos 1080, Exynos 1280, Exynos 2200, Exynos Modem 5123, Exynos Modem 5300, and Exynos Auto T5123. Devices utilizing these chipsets may be vulnerable to exploitation if not patched promptly.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious Service Area List data and sending it to the target device. Upon decoding the manipulated data, the device's 5G MM message codec may suffer from an intra-object overflow, leading to the execution of arbitrary code or service disruption.

Mitigation and Prevention

To safeguard against the risks posed by CVE-2023-26075, proactive measures should be taken by affected users and organizations to mitigate the threat effectively.

Immediate Steps to Take

Implement security updates and patches provided by Samsung for the affected chipsets promptly.
Monitor for any suspicious network activity or anomalous behavior on devices using vulnerable chipsets.
Consider implementing network segmentation and access controls to limit potential attack surfaces.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities in hardware components.
Stay informed about security advisories and updates from Samsung and other relevant sources to prevent future exploits.
Educate users and IT personnel about best practices for maintaining a secure device environment.

Patching and Updates

Samsung has released security updates addressing the CVE-2023-26075 vulnerability in the affected Exynos chipsets. It is crucial for users to apply these patches immediately to mitigate the risk of exploitation and ensure the ongoing security of their devices.