CVEvulnerability

CVE-2019-8921

6.5 MEDIUM Published 2021-11-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-11-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
3.3 LOW — AV:A/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-345

Description

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.

Affected configurations

• bluez bluez (<= 5.48) • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-345 Insufficient Verification of Data Authenticity weakness

References