CVE-2021-38085
What it is
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).
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.0% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 1.0% · EPSS, next 30 days
- Weakness
- CWE-732 · Incorrect permission assignment
- Record status
- Modified
Affected
- Canon Pixma tr150 Firmware ≤ 3.71.2.10
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-38085.md and follow it. Check whether this project is affected by CVE-2021-38085. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
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