MediaTek MT8797 WLAN Driver out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaTek MT6877, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797 and classified as critical. Impacted is an unknown function of the component WLAN Driver. The manipulation results in out-of-bounds write. This vulnerability is known as CVE-2022-21785. Attacking locally is a requirement. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in MediaTek MT6877, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797 (Chip Software). Affected is an unknown code of the component WLAN Driver. 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 WLAN driver, 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: ALPS06807363; Issue ID: ALPS06807363.

The weakness was published 07/07/2022 as ALPS06807363. The advisory is shared for download at corp.mediatek.com. This vulnerability is traded as CVE-2022-21785 since 11/26/2021. There are neither technical details nor an exploit publicly available.

Applying the patch ALPS06807363 is able to eliminate this problem.

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: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: ALPS06807363

Timelineinfo

11/26/2021 🔍
07/07/2022 +222 days 🔍
07/07/2022 +0 days 🔍
07/20/2022 +13 days 🔍

Sourcesinfo

Advisory: ALPS06807363
Status: Confirmed

CVE: CVE-2022-21785 (🔍)
GCVE (CVE): GCVE-0-2022-21785
GCVE (VulDB): GCVE-100-203340

Entryinfo

Created: 07/07/2022 14:18
Updated: 07/20/2022 07:18
Changes: 07/07/2022 14:18 (41), 07/20/2022 07:18 (17)
Complete: 🔍
Cache ID: 216::103

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