MediaTek MT8798 WLAN out-of-bounds write

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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in MediaTek MT5221, MT6580, MT6735, MT6765, MT6768, MT6771, MT6779, MT6785, MT6833, MT6853, MT6873, MT6877, MT6885, MT6983, MT7663, MT7668, MT7902, MT7921, MT7933, MT8167S, MT8168, MT8169, MT8175, MT8185, MT8362A, MT8365, MT8385, MT8518, MT8532, MT8675, MT8695, MT8766, MT8768, MT8771, MT8781, MT8786, MT8788, MT8789, MT8791T, MT8797 and MT8798. This affects an unknown function of the component WLAN. The manipulation leads to out-of-bounds write. This vulnerability is listed as CVE-2023-20682. The attack must be carried out locally. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in MediaTek MT5221, MT6580, MT6735, MT6765, MT6768, MT6771, MT6779, MT6785, MT6833, MT6853, MT6873, MT6877, MT6885, MT6983, MT7663, MT7668, MT7902, MT7921, MT7933, MT8167S, MT8168, MT8169, MT8175, MT8185, MT8362A, MT8365, MT8385, MT8518, MT8532, MT8675, MT8695, MT8766, MT8768, MT8771, MT8781, MT8786, MT8788, MT8789, MT8791T, MT8797 and MT8798 (Chip Software). It has been rated as critical. This issue affects an unknown functionality of the component WLAN. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In wlan, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07441605; Issue ID: ALPS07441605.

The weakness was presented 04/07/2023 as ALPS07441605. The advisory is shared at corp.mediatek.com. The identification of this vulnerability is CVE-2023-20682 since 10/28/2022. Neither technical details nor an exploit are publicly available.

Applying the patch ALPS07441605 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24861). 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: 5.4
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS07441605

Timelineinfo

10/28/2022 🔍
04/07/2023 +161 days 🔍
04/07/2023 +0 days 🔍
08/31/2025 +877 days 🔍

Sourcesinfo

Advisory: ALPS07441605
Status: Confirmed

CVE: CVE-2023-20682 (🔍)
GCVE (CVE): GCVE-0-2023-20682
GCVE (VulDB): GCVE-100-225233
EUVD: 🔍

Entryinfo

Created: 04/07/2023 09:01
Updated: 08/31/2025 15:04
Changes: 04/07/2023 09:01 (41), 04/24/2023 10:00 (11), 08/31/2025 15:04 (16)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!