// For flags

CVE-2019-19523

kernel: use-after-free caused by a malicious USB device in the drivers/usb/misc/adutux.c driver

Severity Score

4.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In the Linux kernel before 5.3.7, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79.

En el kernel de Linux versiones anteriores a 5.3.7, se presenta un bug de uso de la memoria previamente liberada que puede ser causado por un dispositivo USB malicioso en el controlador del drivers/usb/misc/adutux.c, también se conoce como CID-44efc269db79.

A flaw was found in the Linux kernel’s implementation for ADU devices from Ontrak Control Systems, where an attacker with administrative privileges and access to a local account could pre-groom the memory and physically disconnect or unload a module. The attacker must be able to access either of these two events to trigger the use-after-free, and then race the access to the use-after-free, to create a situation where key USB structs can be manipulated into corrupting memory.

*Credits: N/A
CVSS Scores
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-03 CVE Reserved
  • 2019-12-03 CVE Published
  • 2024-08-05 CVE Updated
  • 2024-11-26 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 5.3.7
Search vendor "Linux" for product "Linux Kernel" and version " < 5.3.7"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Opensuse
Search vendor "Opensuse"
Leap
Search vendor "Opensuse" for product "Leap"
15.1
Search vendor "Opensuse" for product "Leap" and version "15.1"
-
Affected