MediaTek MT8797 ril out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in MediaTek MT6879, MT6895, MT6983, MT8321, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791T and MT8797. This impacts an unknown function of the component ril. Such manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2023-20642. Local access is required to approach this attack. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in MediaTek MT6879, MT6895, MT6983, MT8321, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791T and MT8797 (Chip Software). Affected by this issue is an unknown function of the component ril. 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. CVE summarizes:

In ril, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07628586; Issue ID: ALPS07628586.

The weakness was disclosed 03/08/2023 as ALPS07628586. The advisory is shared for download at corp.mediatek.com. This vulnerability is handled as CVE-2023-20642 since 10/28/2022. There are neither technical details nor an exploit publicly available.

Applying the patch ALPS07628586 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24821). Once again VulDB remains the best source for 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
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS07628586

Timelineinfo

10/28/2022 🔍
03/08/2023 +131 days 🔍
03/08/2023 +0 days 🔍
08/28/2025 +904 days 🔍

Sourcesinfo

Advisory: ALPS07628586
Status: Confirmed

CVE: CVE-2023-20642 (🔍)
GCVE (CVE): GCVE-0-2023-20642
GCVE (VulDB): GCVE-100-222572
EUVD: 🔍

Entryinfo

Created: 03/08/2023 09:59
Updated: 08/28/2025 21:17
Changes: 03/08/2023 09:59 (41), 04/01/2023 17:39 (11), 08/28/2025 21:17 (16)
Complete: 🔍
Cache ID: 216::103

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