CVE-2023-20840 Memory corruption in MT6895, MT6897, MT6983, MT8188, MT8195, MT8395
A missing range check in MediaTek imgsys allows local attackers with system privileges to escalate privileges via out-of-bounds read and write.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-20840?
CVE-2023-20840 is a medium-severity memory corruption vulnerability in Google Android, published on 4 Sep 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In imgsys, there is a possible out of bounds read and write due to a missing valid range checking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS07326430; Issue ID: ALPS07326430.
Which versions are affected by CVE-2023-20840?
It affects 4 products.
Products include Google Android, Linux kernel, Linuxfoundation Yocto, Mediatek Iot Yocto.
How do I fix CVE-2023-20840?
No fix has been published for CVE-2023-20840 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-20840 being exploited?
There is no known exploitation of CVE-2023-20840 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as GHSA-hxj2-gx73-fhmx.