Adjacent code execution via negative SDP index
Published Aug 14, 2023 · Updated Oct 9, 2024
Out-of-bounds write in Android 11 through 13 allows physically proximate attackers to execute code through Bluetooth SDP processing. When SDP_AddAttribute fills attr_pad, its index calculation can produce -1 and write a null byte before the intended p_val buffer. No privileges or user interaction are required, but the attacker must be within Bluetooth range; successful exploitation executes code on the device.
Summary
What happened
Out-of-bounds write in Android 11 through 13 allows physically proximate attackers to execute code through Bluetooth SDP processing. When SDP_AddAttribute fills attr_pad, its index calculation can produce -1 and write a null byte before the intended p_val buffer. No privileges or user interaction are required, but the attacker must be within Bluetooth range; successful exploitation executes code on the device.
The record
- CVE
- CVE-2023-21273
- Published
- Aug 14, 2023
- Updated
- Oct 9, 2024
- Vendor
- Product
- Android
- Classifications
- CWE-787, T1203
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 14, 2023CVE publishedPublication date reported by the CVE source.
- Oct 9, 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=11
- Affected versionversion=12
- Affected versionversion=12l
- Affected versionversion=12L
- Affected versionversion=13
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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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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