Local Priv Escalation via OOB Write in imgsys_cmdq on Samsung Exynos
CVE-2023-20842 Published on September 4, 2023
In imgsys_cmdq, there is a possible out of bounds 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: ALPS07354259; Issue ID: ALPS07340477.
Vulnerability Analysis
CVE-2023-20842 is exploitable with local system access, requires user interaction and user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2023-20842 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2023-20842
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Affected Versions
MediaTek, Inc. MT2713, MT6895, MT6897, MT6983, MT8188, MT8195, MT8395, MT8781:- Version Android 11.0, 12.0 / Linux 6.1 / IOT-v23.0 / Yocto 4.0 is affected.
- Version Android 11.0 is affected.
- Version Android 12.0 is affected.
- Version Linux 6.1 is affected.
- Version IOT-v23.0 is affected.
- Version Yocto 4.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.