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

*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
2023-11-09 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free
CWE-476: NULL Pointer Dereference

CAPEC

References (8)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2019/12/03/4	Mailing List
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=44efc269db7929f6275a1fa927ef082e533ecde0	2022-10-31

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html	2022-10-31
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.7	2022-10-31
https://access.redhat.com/security/cve/CVE-2019-19523	2021-05-18
https://bugzilla.redhat.com/show_bug.cgi?id=1783434	2021-05-18

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