MediaTek MT8798 Display DRM out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in MediaTek MT6789, MT6855, MT6895, MT6983, MT8188, MT8195, MT8365, MT8781, MT8795T and MT8798. This vulnerability affects unknown code of the component Display DRM. The manipulation results in out-of-bounds write. This vulnerability was named CVE-2023-20666. The attack needs to be approached locally. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in MediaTek MT6789, MT6855, MT6895, MT6983, MT8188, MT8195, MT8365, MT8781, MT8795T and MT8798 (Chip Software). Affected is an unknown part of the component Display DRM. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In display drm, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07310651; Issue ID: ALPS07292173.

The weakness was presented 04/07/2023 as ALPS07310651. The advisory is shared for download at corp.mediatek.com. This vulnerability is traded as CVE-2023-20666 since 10/28/2022. There are neither technical details nor an exploit publicly available.

Applying the patch ALPS07310651 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24845). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS07310651

Timelineinfo

10/28/2022 🔍
04/07/2023 +161 days 🔍
04/07/2023 +0 days 🔍
08/29/2025 +875 days 🔍

Sourcesinfo

Advisory: ALPS07310651
Status: Confirmed

CVE: CVE-2023-20666 (🔍)
GCVE (CVE): GCVE-0-2023-20666
GCVE (VulDB): GCVE-100-225228
EUVD: 🔍

Entryinfo

Created: 04/07/2023 09:01
Updated: 08/29/2025 18:42
Changes: 04/07/2023 09:01 (41), 04/24/2023 09:47 (11), 08/29/2025 18:42 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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