VDB-225237 · CVE-2023-20687 · ALPS07570772

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

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

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 product 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

Chip Software

Vendor

MediaTek

Name

License

commercial

CVSSv4info

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

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

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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unlock	unlock	unlock	unlock	unlock	unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

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: ALPS07570772

Timelineinfo

10/28/2022 🔍
04/07/2023 +161 days 🔍
04/07/2023 +0 days 🔍
04/24/2023 +17 days 🔍

Sourcesinfo

Advisory: ALPS07570772
Status: Confirmed

CVE: CVE-2023-20687 (🔍)

Entryinfo

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