Vulnerability Description
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).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canon | Pixma Tr150 Firmware | <= 3.71.2.10 |
| Canon | Pixma Tr150 | - |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-PrivileExploitThird Party AdvisoryVDB Entry
- https://defcon.org/html/defcon-29/dc-29-speakers.html#bainesThird Party Advisory
- https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03Third Party Advisory
- https://www.youtube.com/watch?v=vdesswZYz-8ExploitThird Party Advisory
- http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-PrivileExploitThird Party AdvisoryVDB Entry
- https://defcon.org/html/defcon-29/dc-29-speakers.html#bainesThird Party Advisory
- https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03Third Party Advisory
- https://www.youtube.com/watch?v=vdesswZYz-8ExploitThird Party Advisory
FAQ
What is CVE-2021-38085?
CVE-2021-38085 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ove...
How severe is CVE-2021-38085?
CVE-2021-38085 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-38085?
Check the references section above for vendor advisories and patch information. Affected products include: Canon Pixma Tr150 Firmware, Canon Pixma Tr150.