CVE-2023-35657
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-04

Last updated on: 2025-09-05

Assigner: Android (associated with Google Inc. or Open Handset Alliance)

Description
In bta_av_config_ind of bta_av_aact.cc, there is a possible out of bounds read due to type confusion. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
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Meta Information
Published
2025-09-04
Last Modified
2025-09-05
Generated
2026-06-16
AI Q&A
2025-09-04
EPSS Evaluated
2026-06-14
NVD
CVE-2023-35657
EUVD
EUVD-2023-39657
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
google android 13.0
google android 15.0
google android 14.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

CVE-2023-35657 is an out-of-bounds (OOB) read vulnerability in the Android Bluetooth module, specifically in the Fluoride Bluetooth stack. It occurs because the function bta_av_setconfig_rej incorrectly assumes the type of a union member passed to it, leading to reading memory outside the intended bounds. This type confusion causes the function to access invalid memory, which can disclose local information without needing any special privileges or user interaction. [1]

Impact Analysis

This vulnerability can lead to local information disclosure on affected Android devices. An attacker could exploit this flaw to read sensitive data from memory without requiring additional execution privileges or user interaction. While it does not allow code execution or remote attacks, the exposure of local information could be leveraged in further attacks or to compromise user privacy. [1]

Detection Guidance

This vulnerability can be detected by building and running the Fluoride Bluetooth stack with the provided fix and running its automated libbluetooth tests and manual tests. The Fluoride Bluetooth daemon (btadapterd) can be run on Linux to monitor Bluetooth interfaces (default hci0). There are no specific detection commands provided, but setting up the build environment and running the tests as described in the resource can help identify the issue. [1]

Mitigation Strategies

Immediate mitigation involves updating the Fluoride Bluetooth stack to include the fix committed on April 5, 2024, which corrects the out-of-bounds read by modifying the function bta_av_setconfig_rej to avoid incorrect union member assumptions. If using affected Android or Linux systems with the Fluoride Bluetooth stack, apply the patch or update to a version including this fix. Additionally, running the updated btadapterd daemon can help ensure the vulnerability is addressed. [1]

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