CVE-2021-38085
First published: Wed Aug 11 2021(Updated: )
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).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Canon Pixma Tr150 Firmware | <=3.71.2.10 | |
| Canon Pixma Tr150 |
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Reference Links
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.
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