Vulnerability Details CVE-2021-38085
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).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.037
EPSS Ranking 87.4%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 7.2
References
- http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.html
- https://defcon.org/html/defcon-29/dc-29-speakers.html#baines
- https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txt
- https://www.youtube.com/watch?v=vdesswZYz-8
- http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.html
- https://defcon.org/html/defcon-29/dc-29-speakers.html#baines
- https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txt
- https://www.youtube.com/watch?v=vdesswZYz-8
Products affected by CVE-2021-38085
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cpe:2.3:h:canon:pixma_tr150:-
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cpe:2.3:o:canon:pixma_tr150_firmware:-
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cpe:2.3:o:canon:pixma_tr150_firmware:3.71.2.10