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Debian: Security Advisory for bluez (DSA-4647-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'bluez' package(s) announced via the DSA-4647-1 advisory.
Insight
Insight
It was reported that the BlueZ's HID and HOGP profile implementations don't specifically require bonding between the device and the host. Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source.
Affected Software
Affected Software
'bluez' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For the HID profile an new configuration option (ClassicBondedOnly) is introduced to make sure that input connections only come from bonded device connections. The options defaults to false to maximize device compatibility. For the oldstable distribution (stretch), this problem has been fixed in version 5.43-2+deb9u2. For the stable distribution (buster), this problem has been fixed in version 5.50-1.2~deb10u1. We recommend that you upgrade your bluez packages.