MediaTek MT6879/MT6895/MT6983/MT8781 Display DRM race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

A vulnerability, which was classified as problematic, was found in MediaTek MT6879, MT6895, MT6983 and MT8781 (Chip Software) (unknown version). This affects an unknown code block of the component Display DRM. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In display drm, there is a possible double free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07570772; Issue ID: ALPS07570772.

The weakness was disclosed 04/07/2023 as ALPS07570772. The advisory is shared at corp.mediatek.com. This vulnerability is uniquely identified as CVE-2023-20687 since 10/28/2022. Neither technical details nor an exploit are publicly available.

Applying the patch ALPS07570772 is able to eliminate this problem.

Productinfo

Type

Vendor

Name

License

  • commercial

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

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

NVD Base Score: 6.4
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Race condition
CWE: CWE-362
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: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: ALPS07570772

Timelineinfo

10/28/2022 CVE reserved
04/07/2023 +161 days Advisory disclosed
04/07/2023 +0 days VulDB entry created
04/24/2023 +17 days VulDB last update

Sourcesinfo

Advisory: ALPS07570772
Status: Confirmed

CVE: CVE-2023-20687 (🔒)

Entryinfo

Created: 04/07/2023 09:02 AM
Updated: 04/24/2023 10:12 AM
Changes: 04/07/2023 09:02 AM (40), 04/24/2023 10:12 AM (11)
Complete: 🔍

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