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).

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://defcon.org/html/defcon-29/dc-29-speakers.html#baines	Third Party Advisory
http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.html	Exploit Third Party Advisory VDB Entry
https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txt	Third Party Advisory
https://www.youtube.com/watch?v=vdesswZYz-8	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:canon:pixma_tr150_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:canon:pixma_tr150:-:*:*:*:*:*:*:*

Information

Published : 2021-08-11 11:15

Updated : 2022-05-03 09:04

NVD link : CVE-2021-38085

Mitre link : CVE-2021-38085

JSON object : View

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

Products Affected

canon

pixma_tr150
pixma_tr150_firmware

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7.8 /10