CVE-2019-8922

bluez: heap-based buffer overflow via crafted request

Published Nov 29, 2021 CVSS 3.1 · 8.8 High EPSS 1.5% KEV · Not listed
Description
A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48. There isn't any check on whether there is enough space in the destination buffer. The function simply appends all data passed to it. The values of all attributes that are requested are appended to the output buffer. There are no size checks whatsoever, resulting in a simple heap overflow if one can craft a request where the response is large enough to overflow the preallocated buffer. This issue exists in service_attr_req gets called by process_request (in sdpd-request.c), which also allocates the response buffer.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2827-1 bluez security update
Debian DLA Debian DLA DLA-3157-1 bluez security update
EUVD EUVD EUVD-2019-18310 A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48. There isn't any check on whether there is enough space in the destination buffer. The function simply appends all data passed to it. The values of all attributes that are requested are appended to the output buffer. There are no size checks whatsoever, resulting in a simple heap overflow if one can craft a request where the response is large enough to overflow the preallocated buffer. This issue exists in service_attr_req gets called by process_request (in sdpd-request.c), which also allocates the response buffer.
Ubuntu USN Ubuntu USN USN-5183-1 BlueZ vulnerability
Ubuntu USN Ubuntu USN USN-7265-1 BlueZ vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics epss

{'score': 0.00072}

epss

{'score': 0.00066}

Type Values Removed Values Added
Metrics epss

{'score': 0.00078}

epss

{'score': 0.00072}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Apr 15, 2026, 9:06 PM
Reserved
Feb 18, 2019, 12:00 AM
Status
Modified
Published
Nov 29, 2021, 8:15 AM
Modified
Jun 17, 2026, 2:42 AM
Severity
Moderate
Public date
Feb 25, 2019, 12:00 AM