MediaTek MT8798 Sound Driver symlink

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in MediaTek MT6781, MT6877, MT6879, MT6893, MT6895, MT6983, MT8791, MT8797 and MT8798. Affected by this issue is some unknown functionality of the component Sound Driver. This manipulation causes symlink. This vulnerability is handled as CVE-2022-21770. The attack can be initiated remotely. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6781, MT6877, MT6879, MT6893, MT6895, MT6983, MT8791, MT8797 and MT8798 (Chip Software). It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Sound Driver. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect confidentiality. The summary by CVE is:

In sound driver, there is a possible information disclosure due to symlink following. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06558663; Issue ID: ALPS06558663.

The weakness was released 07/06/2022 as ALPS06558663. The advisory is shared at corp.mediatek.com. This vulnerability is known as CVE-2022-21770 since 11/26/2021. Neither technical details nor an exploit are publicly available.

Applying the patch ALPS06558663 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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: ALPS06558663

Timelineinfo

11/26/2021 🔍
07/06/2022 +221 days 🔍
07/06/2022 +0 days 🔍
07/19/2022 +13 days 🔍

Sourcesinfo

Advisory: ALPS06558663
Status: Confirmed

CVE: CVE-2022-21770 (🔍)
GCVE (CVE): GCVE-0-2022-21770
GCVE (VulDB): GCVE-100-203281

Entryinfo

Created: 07/06/2022 22:01
Updated: 07/19/2022 13:55
Changes: 07/06/2022 22:01 (41), 07/19/2022 13:55 (18)
Complete: 🔍
Cache ID: 216::103

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