A vulnerability, which was classified as critical, was found in CleanMyMac X 4.04. Affected is an unknown functionality of the component Helper Service. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An exploitable privilege escalation vulnerability exists in the helper service of Clean My Mac X, version 4.04, due to improper input validation. An attacker with local access could exploit this vulnerability to modify the file system as root.

The bug was discovered 01/02/2019. The weakness was presented 01/10/2019 (Website). The advisory is available at talosintelligence.com. This vulnerability is traded as CVE-2018-4044 since 01/02/2018. Local access is required to approach this attack. The successful exploitation needs a authentication. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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• CleanMyMac X

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• 4.04

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CPE 2.2info

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