MediaTek MT8797 keyinstall integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in MediaTek MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T and MT8797. This vulnerability affects unknown code of the component keyinstall. Executing a manipulation can lead to integer underflow. The identification of this vulnerability is CVE-2023-20635. The attack can only be executed locally. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic was found in MediaTek MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T and MT8797 (Chip Software). This vulnerability affects an unknown function of the component keyinstall. The manipulation with an unknown input leads to a integer underflow vulnerability. The CWE definition for the vulnerability is CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. As an impact it is known to affect confidentiality. CVE summarizes:

In keyinstall, there is a possible information disclosure due to an integer overflow. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07563028; Issue ID: ALPS07563028.

The weakness was shared 03/08/2023 as ALPS07563028. The advisory is shared for download at corp.mediatek.com. This vulnerability was named CVE-2023-20635 since 10/28/2022. There are neither technical details nor an exploit publicly available.

Applying the patch ALPS07563028 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24814). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.3

VulDB Base Score: 2.3
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
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: ALPS07563028

Timelineinfo

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

Sourcesinfo

Advisory: ALPS07563028
Status: Confirmed

CVE: CVE-2023-20635 (🔍)
GCVE (CVE): GCVE-0-2023-20635
GCVE (VulDB): GCVE-100-222544
EUVD: 🔍

Entryinfo

Created: 03/08/2023 08:52
Updated: 08/28/2025 17:46
Changes: 03/08/2023 08:52 (41), 04/01/2023 14:57 (11), 08/28/2025 17:46 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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