MediaTek MT8797 Preloader 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 categorized as critical has been discovered in MediaTek MT6880, MT6890, MT8167, MT8175, MT8185, MT8195, MT8321, MT8365, MT8385, MT8395, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T and MT8797. Affected is an unknown function of the component Preloader. Such manipulation leads to out-of-bounds write. This vulnerability is listed as CVE-2023-20696. The attack must be carried out locally. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6880, MT6890, MT8167, MT8175, MT8185, MT8195, MT8321, MT8365, MT8385, MT8395, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T and MT8797 (Chip Software) and classified as critical. Affected by this issue is an unknown functionality of the component Preloader. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In preloader, 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: ALPS07856356 / ALPS07874388 (For MT6880 and MT6890 only); Issue ID: ALPS07856356 / ALPS07874388 (For MT6880 and MT6890 only).

The weakness was presented 05/16/2023 as ALPS07856356. The advisory is available at corp.mediatek.com. This vulnerability is handled as CVE-2023-20696 since 10/28/2022. The technical details are unknown and an exploit is not available.

Applying the patch ALPS07856356 is able to eliminate this problem.

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Productinfo

Type

Vendor

Name

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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: ALPS07856356

Timelineinfo

10/28/2022 🔍
05/16/2023 +200 days 🔍
05/16/2023 +0 days 🔍
01/24/2025 +618 days 🔍

Sourcesinfo

Advisory: ALPS07856356
Status: Confirmed

CVE: CVE-2023-20696 (🔍)
GCVE (CVE): GCVE-0-2023-20696
GCVE (VulDB): GCVE-100-229118

Entryinfo

Created: 05/16/2023 08:14
Updated: 01/24/2025 00:45
Changes: 05/16/2023 08:14 (41), 06/09/2023 11:23 (11), 01/24/2025 00:45 (26)
Complete: 🔍
Cache ID: 216::103

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