Memory corruption via unchecked provisioning segment counts
Published Jul 26, 2022 · Updated Sep 17, 2024
Out-of-bounds write in Zephyr RTOS 3.0 and earlier allows remote authenticated users to corrupt memory through Bluetooth Mesh provisioning. In gen_prov_start, a Transaction Start PDU's SegN is accepted without verifying that it matches TotalLength, letting a later oversized SegO bypass segment checks and write beyond rx_buf. The attacker must be within Bluetooth range and able to participate in provisioning; the overwrite occurs only while a node processes provisioning traffic.
Summary
What happened
Out-of-bounds write in Zephyr RTOS 3.0 and earlier allows remote authenticated users to corrupt memory through Bluetooth Mesh provisioning. In gen_prov_start, a Transaction Start PDU's SegN is accepted without verifying that it matches TotalLength, letting a later oversized SegO bypass segment checks and write beyond rx_buf. The attacker must be within Bluetooth range and able to participate in provisioning; the overwrite occurs only while a node processes provisioning traffic.
The record
- CVE
- CVE-2022-1041
- Published
- Jul 26, 2022
- Updated
- Sep 17, 2024
- Vendor
- Zephyr Project
- Product
- Zephyr RTOS
- Classifications
- CWE-787
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 26, 2022CVE publishedPublication date reported by the CVE source.
- Sep 17, 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?
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- Affected versionversion=unspecified <=v3.0
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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