MediaTek MT8798 KeyInstall out-of-bounds write

HistoryDiffrelatejsonxmlCTI

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4.0	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in MediaTek MT6765, MT6768, MT6833, MT6835, MT6853, MT6855, MT6879, MT6886, MT6893, MT6983, MT6989, MT8321, MT8385, MT8765, MT8766, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788, MT8789, MT8791T, MT8792, MT8795T, MT8796, MT8797 and MT8798. This affects an unknown function of the component KeyInstall. Such manipulation leads to out-of-bounds write. This vulnerability is referenced as CVE-2024-20121. The attack can only be performed from a local environment. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6765, MT6768, MT6833, MT6835, MT6853, MT6855, MT6879, MT6886, MT6893, MT6983, MT6989, MT8321, MT8385, MT8765, MT8766, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788, MT8789, MT8791T, MT8792, MT8795T, MT8796, MT8797 and MT8798. It has been rated as critical. Affected by this issue is an unknown part of the component KeyInstall. 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 KeyInstall, 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: ALPS08956986; Issue ID: MSV-1574.

The advisory is available at corp.mediatek.com. This vulnerability is handled as CVE-2024-20121 since 11/02/2023. The exploitation is known to be easy. Local access is required to approach this attack. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available.

Applying the patch ALPS08956986 is able to eliminate this problem.

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Productinfo

Type

Chip Software

Vendor

MediaTek

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

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

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS08956986

Timelineinfo

11/02/2023 🔍
11/04/2024 +368 days 🔍
11/04/2024 +0 days 🔍
11/04/2024 +0 days 🔍

Sourcesinfo

Advisory: MSV-1574
Status: Confirmed

CVE: CVE-2024-20121 (🔍)
GCVE (CVE): GCVE-0-2024-20121
GCVE (VulDB): GCVE-100-282950

Entryinfo

Created: 11/04/2024 07:11
Changes: 11/04/2024 07:11 (56)
Complete: 🔍
Cache ID: 216::103