VDB-232908 · CVE-2023-20771 · ALPS07671046

MediaTek MT8781 display 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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in MediaTek MT6580, MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6785, MT8168 and MT8781 and classified as problematic. Impacted is an unknown function of the component display. The manipulation results in race condition. This vulnerability was named CVE-2023-20771. The attack needs to be approached locally. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6580, MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6785, MT8168 and MT8781 (Chip Software). It has been classified as problematic. Affected is an unknown code of the component display. 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. CVE summarizes:

In display, there is a possible memory corruption 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: ALPS07671046; Issue ID: ALPS07671046.

The weakness was presented 07/04/2023 as ALPS07671046. The advisory is shared for download at corp.mediatek.com. This vulnerability is traded as CVE-2023-20771 since 10/28/2022. There are neither technical details nor an exploit publicly available.

Applying the patch ALPS07671046 is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Chip Software

Vendor

MediaTek

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.9
VulDB Temp Score: 3.8
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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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: Partially
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: ALPS07671046

Timelineinfo

10/28/2022 🔍
07/04/2023 +249 days 🔍
07/04/2023 +0 days 🔍
07/22/2023 +18 days 🔍

Sourcesinfo

Advisory: ALPS07671046
Status: Confirmed

CVE: CVE-2023-20771 (🔍)
GCVE (CVE): GCVE-0-2023-20771
GCVE (VulDB): GCVE-100-232908

Entryinfo

Created: 07/04/2023 07:15
Updated: 07/22/2023 19:08
Changes: 07/04/2023 07:15 (40), 07/22/2023 19:08 (11)
Complete: 🔍
Cache ID: 216::103