High severity · published Jan 15, 2021
CVE-2020-25533
An issue was discovered in Malwarebytes before 4.0 on macOS
7.0
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Malwarebytes · Malwarebytes
before 4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25533
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25533
Exploit
https://wojciechregula.blog/post/learn-xpc-exploitation-part-2-say-no-to-the-pid/
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