CVE-2019-8921
First published: Mon Nov 29 2021(Updated: )
An issue was discovered in bluetoothd in BlueZ through 5.48. The vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementation. By crafting a malicious CSTATE, it is possible to trick the server into returning more bytes than the buffer actually holds, resulting in leaking arbitrary heap data. The root cause can be found in the function service_attr_req of sdpd-request.c. The server does not check whether the CSTATE data is the same in consecutive requests, and instead simply trusts that it is the same.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| BlueZ BlueZ | <=5.48 | |
| Linux Linux kernel | ||
| Debian Debian Linux | =10.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2019-8921?
CVE-2019-8921 is a vulnerability in bluetoothd in BlueZ through version 5.48.
What is the severity of CVE-2019-8921?
CVE-2019-8921 has a severity rating of 6.5 (medium).
How does CVE-2019-8921 work?
CVE-2019-8921 exploits a vulnerability in the handling of a SVC_ATTR_REQ by the SDP implementation, allowing for leaking arbitrary data.
Which software is affected by CVE-2019-8921?
CVE-2019-8921 affects BlueZ versions up to and including 5.48.
How can I fix CVE-2019-8921?
To fix CVE-2019-8921, it is recommended to update to a version of BlueZ that is not affected by the vulnerability.
- agent/references
- agent/tags
- agent/event
- agent/weakness
- agent/author
- agent/severity
- agent/type
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- vendor/bluez
- canonical/bluez bluez
- version/bluez bluez/5.48
- vendor/linux
- canonical/linux linux kernel
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0