CVE-2021-38085: High severity Canon Pixma Tr150 Firmware vulnerability
The Canon TR150 print driver through 3.71.2.10 is vulnerable to a privilege escalation issue. During the add printer process, a local attacker can overwrite CNMurGE.dll and, if timed properly, the overwritten DLL will be loaded into a SYSTEM process resulting in escalation of privileges. This occurs because the driver drops a world-writable DLL into a CanonBJ %PROGRAMDATA% location that gets loaded by printisolationhost (a system process).
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-38085?
CVE-2021-38085 is a vulnerability in the Canon TR150 print driver through version 3.71.2.10 that allows a local attacker to escalate privileges.
How does CVE-2021-38085 work?
During the add printer process, a local attacker can overwrite CNMurGE.dll, which can be loaded into a SYSTEM process, resulting in privilege escalation.
What is the severity of CVE-2021-38085?
CVE-2021-38085 has a severity rating of 7.8 (high).
How can I fix CVE-2021-38085?
To fix CVE-2021-38085, update the Canon TR150 print driver to version 3.71.2.11 or later.
Is the Canon Pixma TR150 affected by CVE-2021-38085?
No, the Canon Pixma TR150 is not affected by CVE-2021-38085.