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Debian: Security Advisory for bluez (DSA-4647-1)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.8

CVSSv2 Vector

CVSSv2 Vector

AV:A/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

Share

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.

Common Vulnerabilities and Exposures (CVE)

References

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brew install --cask multipass

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multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

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curl -sL https://www.mageni.net/installation | sudo bash

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