Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Malwarebytes | Malwarebytes | < 4.0 |
Related Weaknesses (CWE)
References
- https://wojciechregula.blog/post/learn-xpc-exploitation-part-2-say-no-to-the-pidExploitPatchThird Party Advisory
- https://wojciechregula.blog/post/learn-xpc-exploitation-part-2-say-no-to-the-pidExploitPatchThird Party Advisory
FAQ
What is CVE-2020-25533?
CVE-2020-25533 is a vulnerability with a CVSS score of 7.0 (HIGH). 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 va...
How severe is CVE-2020-25533?
CVE-2020-25533 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-25533?
Check the references section above for vendor advisories and patch information. Affected products include: Malwarebytes Malwarebytes.