Vulnerability Details : CVE-2019-8921
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.
Products affected by CVE-2019-8921
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:bluez:bluez:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-8921
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-8921
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.3
|
LOW | AV:A/AC:L/Au:N/C:P/I:N/A:N |
6.5
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2019-8921
-
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-8921
-
https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html
[SECURITY] [DLA 3157-1] bluez security updateMailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20211203-0002/
November 2021 BlueZ Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/
SSD Advisory – Linux BlueZ Information Leak and Heap Overflow - SSD Secure DisclosureExploit;Patch;Third Party Advisory
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