MediaTek MT8797 Ril out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in MediaTek 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, MT8321, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791T and MT8797. This issue affects some unknown processing of the component Ril. This manipulation causes out-of-bounds write. This vulnerability appears as CVE-2023-20707. The attack requires local access. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical was found in MediaTek 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, MT8321, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791T and MT8797 (Chip Software). Affected by this vulnerability is some unknown processing of the component Ril. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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: ALPS07628556; Issue ID: ALPS07628556.

The weakness was presented 05/16/2023 as ALPS07628556. It is possible to read the advisory at corp.mediatek.com. This vulnerability is known as CVE-2023-20707 since 10/28/2022. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS07628556 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24886). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 6.7
NVD Vector: 🔍

CNA Base Score: 6.7
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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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: ALPS07628556

Timelineinfo

10/28/2022 🔍
05/16/2023 +200 days 🔍
05/16/2023 +0 days 🔍
08/31/2025 +838 days 🔍

Sourcesinfo

Advisory: ALPS07628556
Status: Confirmed

CVE: CVE-2023-20707 (🔍)
GCVE (CVE): GCVE-0-2023-20707
GCVE (VulDB): GCVE-100-229123
EUVD: 🔍

Entryinfo

Created: 05/16/2023 08:15
Updated: 08/31/2025 22:19
Changes: 05/16/2023 08:15 (41), 06/09/2023 12:00 (11), 01/25/2025 01:31 (26), 08/31/2025 22:19 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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