CVE-2020-25533
HIGHMalwarebytes < 4.0 - Privilege Escalation via XPC PID Validation Race Condition
Title source: llmDescription
An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.
References (1)
Core 1
Core References
Exploit, Patch, Third Party Advisory x_refsource_misc
https://wojciechregula.blog/post/learn-xpc-exploitation-part-2-say-no-to-the-pid/
Scores
CVSS v3
7.0
EPSS
0.0025
EPSS Percentile
16.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-362
Status
published
Products (1)
malwarebytes/malwarebytes
< 4.0
Published
Jan 15, 2021
Tracked Since
Feb 18, 2026