MediaTek MT9982 vcu out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaTek MT5696, MT5836, MT5838, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8168, MT8365, MT8395, MT9000, MT9015, MT9023, MT9025, MT9618, MT9649, MT9653, MT9679, MT9687, MT9689, MT9902, MT9932, MT9952, MT9972 and MT9982. It has been classified as critical. Affected is an unknown function of the component vcu. Performing a manipulation results in out-of-bounds write. This vulnerability was named CVE-2023-20734. The attack needs to be approached locally. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in MediaTek MT5696, MT5836, MT5838, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8168, MT8365, MT8395, MT9000, MT9015, MT9023, MT9025, MT9618, MT9649, MT9653, MT9679, MT9687, MT9689, MT9902, MT9932, MT9952, MT9972 and MT9982 (Chip Software). This affects an unknown code block of the component vcu. 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. The summary by CVE is:

In vcu, 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: ALPS07645149; Issue ID: ALPS07645184.

The weakness was presented 06/06/2023 as ALPS07645149. It is possible to read the advisory at corp.mediatek.com. This vulnerability is uniquely identified as CVE-2023-20734 since 10/28/2022. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS07645149 is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 6.7
NVD Vector: 🔍

CNA Base Score: 6.7
CNA 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: ALPS07645149

Timelineinfo

10/28/2022 🔍
06/06/2023 +221 days 🔍
06/06/2023 +0 days 🔍
01/08/2025 +582 days 🔍

Sourcesinfo

Advisory: ALPS07645149
Status: Confirmed

CVE: CVE-2023-20734 (🔍)
GCVE (CVE): GCVE-0-2023-20734
GCVE (VulDB): GCVE-100-230823

Entryinfo

Created: 06/06/2023 16:03
Updated: 01/08/2025 16:53
Changes: 06/06/2023 16:03 (41), 06/30/2023 17:01 (11), 01/08/2025 16:53 (26)
Complete: 🔍
Cache ID: 216::103

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