A vulnerability was found in BlueZ 5.42. It has been rated as critical. Affected by this issue is the function l2cap_packet of the file monitor/packet.c of the component Dump File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In BlueZ 5.42, a buffer over-read was identified in "l2cap_packet" function in "monitor/packet.c" source file. This issue can be triggered by processing a corrupted dump file and will result in btmon crash.

The bug was discovered 11/15/2016. The weakness was published 12/03/2016 (Website). The advisory is available at securityfocus.com. This vulnerability is handled as CVE-2016-9802 since 12/03/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 18 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172414 (SUSE Enterprise Linux Security Update for bluez (SUSE-SU-2019:1339-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at 93945, 93946, 93947 and 93948.

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Name

• BlueZ

Version

• 5.42

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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