CVE-2023-20805 : What You Need to Know

This CVE record, assigned by MediaTek, highlights a vulnerability in imgsys that could potentially result in an out-of-bounds write, leading to local escalation of privilege without the need for user interaction. The vulnerability requires System execution privileges for exploitation and affects multiple MediaTek products running specific versions.

Understanding CVE-2023-20805

This section delves deeper into the nature of the CVE-2023-20805 vulnerability.

What is CVE-2023-20805?

CVE-2023-20805 exists in imgsys and is characterized by a missing bounds check, which could allow an attacker to perform an out-of-bounds write operation. This vulnerability may result in local escalation of privilege, requiring System execution privileges for successful exploitation.

The Impact of CVE-2023-20805

The impact of CVE-2023-20805 is serious as it could enable an attacker to elevate their privilege locally without the need for user interaction. This could lead to unauthorized access and manipulation of sensitive data on affected systems.

Technical Details of CVE-2023-20805

This section provides technical details regarding the CVE-2023-20805 vulnerability.

Vulnerability Description

The vulnerability in imgsys arises due to a missing bounds check, allowing for an out-of-bounds write operation. This flaw could be exploited by attackers to escalate their privilege locally on affected systems.

Affected Systems and Versions

The vulnerability impacts various MediaTek products including MT2713, MT6879, MT6895, MT6983, MT8188, MT8195, MT8395, and MT8673. Specifically, systems running Android 12.0, 13.0, and IOT-v23.0 (Yocto 4.0) are susceptible to this vulnerability.

Exploitation Mechanism

To exploit CVE-2023-20805, an attacker would need to leverage the missing bounds check in imgsys, allowing for an out-of-bounds write operation. This could potentially lead to local escalation of privilege on the affected systems.

Mitigation and Prevention

Mitigating the CVE-2023-20805 vulnerability is crucial to ensure the security of systems and data.

Immediate Steps to Take

Immediate steps to mitigate the risk associated with CVE-2023-20805 include applying relevant patches and updates provided by MediaTek. System administrators and users should prioritize the installation of these patches to address the vulnerability.

Long-Term Security Practices

In the long term, adopting robust security practices such as regular security assessments, code reviews, and ensuring timely software updates can help prevent similar vulnerabilities from being exploited in the future.

Patching and Updates

MediaTek has released a patch identified by Patch ID ALPS07199773 and Issue ID ALPS07326411 to address the CVE-2023-20805 vulnerability. System administrators and users are advised to promptly apply this patch to secure the affected systems against potential exploits.