// For flags

CVE-2019-8921

 

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha detectado un problema en bluetoothd en BlueZ versiones hasta 5.48. La vulnerabilidad reside en el manejo de un SVC_ATTR_REQ por parte de la implementación del SDP. Si se diseña un CSTATE malicioso, es posible engañar al servidor para que devuelva más bytes de los que realmente contiene el búfer, lo que da lugar a una fuga de datos arbitraria del montón. La causa principal se encuentra en la función service_attr_req del archivo sdpd-request.c. El servidor no comprueba si los datos CSTATE son los mismos en peticiones consecutivas, y en su lugar simplemente confía en que son los mismos

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-02-18 CVE Reserved
  • 2021-11-29 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • 2024-08-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-345: Insufficient Verification of Data Authenticity
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Bluez
Search vendor "Bluez"
Bluez
Search vendor "Bluez" for product "Bluez"
<= 5.48
Search vendor "Bluez" for product "Bluez" and version " <= 5.48"
-
Affected
in Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
--
Safe
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected