Bug 2278972 (CVE-2023-50230)

Summary: CVE-2023-50230 bluez: phone book access profile heap-based buffer overflow remote code execution vulnerability
Product: [Other] Security Response Reporter: Robb Gatica <rgatica>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found within the handling of the Phone Book Access profile in BlueZ. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device.
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Bug Depends On: 2278973    
Bug Blocks: 2278934    

Description Robb Gatica 2024-05-03 19:18:58 UTC 
BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device.

The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20938.

https://github.com/bluez/bluez/commit/5ab5352531a9cc7058cce569607f3a6831464443
https://www.zerodayinitiative.com/advisories/ZDI-23-1812/
Comment 1 Robb Gatica 2024-05-03 19:19:49 UTC 
Created bluez tracking bugs for this issue:

Affects: fedora-all [bug 2278973]
Comment 3 errata-xmlrpc 2024-11-12 10:45:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9413 https://access.redhat.com/errata/RHSA-2024:9413