Bluetooth information disclosure via unchecked L2CAP length
Published Nov 20, 2024 · Updated Nov 20, 2024
Out-of-bounds read in Android 7 through 9 allows physically proximate attackers to disclose process memory through Bluetooth HID traffic. The hidh_l2cif_data_ind function in stack/hid/hidh_conn.cc reads the first byte of an L2CAP packet without first ensuring that p_msg->len is at least one. No privileges or user interaction are required, but exploitation requires Bluetooth proximity and a crafted zero-length L2CAP packet; the consequence excludes code execution, data modification, and service interruption.
Summary
What happened
Out-of-bounds read in Android 7 through 9 allows physically proximate attackers to disclose process memory through Bluetooth HID traffic. The hidh_l2cif_data_ind function in stack/hid/hidh_conn.cc reads the first byte of an L2CAP packet without first ensuring that p_msg->len is at least one. No privileges or user interaction are required, but exploitation requires Bluetooth proximity and a crafted zero-length L2CAP packet; the consequence excludes code execution, data modification, and service interruption.
The record
- CVE
- CVE-2018-9486
- Published
- Nov 20, 2024
- Updated
- Nov 20, 2024
- Vendor
- Product
- Android
- Classifications
- CWE-125
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 20, 2024CVE publishedPublication date reported by the CVE source.
- Nov 20, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7
- Affected versionversion=8
- Affected versionversion=8.1
- Affected versionversion=9
- Affected versionversion=nyc-mr1-dev
- Affected versionversion=nyc-mr2-dev
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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