SB2019120343 - Multiple vulnerabilities in Linux kernel

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2019120343

SB2019120343 - Multiple vulnerabilities in Linux kernel

Published: December 3, 2019 Updated: July 17, 2020

Security Bulletin ID SB2019120343
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2019-19531)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to use-after-free error in the drivers/usb/misc/yurex.c driver, aka CID-fc05481b2fca. A local user can use a malicious USB device to trigger use-after-free error and execute arbitrary code on the system with elevated privileges.


2) Information disclosure (CVE-ID: CVE-2019-19535)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

In the Linux kernel before 5.2.9, there is an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver, aka CID-30a8beeb3042.


Remediation

Install update from vendor's website.

References