CVE-2021-38085: canon pixma_tr150_firmware

Vulnerability summary

CVE-2021-38085 is a high (CVSS 7.8) vulnerability in canon pixma_tr150_firmware. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.6% of scored vulnerabilities. 3 public exploits are recorded.

Timeline

1. 11-08-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

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).

• CWE-732Incorrect Permission Assignment for Critical ResourceThe product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.