MediaTek MT8797 WLAN Driver out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

A vulnerability was found in MediaTek MT6761, MT6779, MT6781, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797 (Chip Software). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component WLAN Driver. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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: ALPS06704526; Issue ID: ALPS06704393.

The weakness was published 07/07/2022 as ALPS06704393. It is possible to read the advisory at corp.mediatek.com. This vulnerability is known as CVE-2022-21779 since 11/26/2021. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS06704526 is able to eliminate this problem.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

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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
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS06704526

Timelineinfo

11/26/2021 🔍
07/07/2022 +222 days 🔍
07/07/2022 +0 days 🔍
07/19/2022 +12 days 🔍

Sourcesinfo

Advisory: ALPS06704393
Status: Confirmed

CVE: CVE-2022-21779 (🔍)

Entryinfo

Created: 07/07/2022 12:01
Updated: 07/19/2022 19:01
Changes: 07/07/2022 12:01 (41), 07/19/2022 19:01 (17)
Complete: 🔍

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