A vulnerability was found in CleanMyMac X (affected version not known). It has been classified as critical. Affected is some unknown functionality. 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:

The CleanMyMac X software contains an exploitable privilege escalation vulnerability that exists due to improper input validation. An attacker with local access could use this vulnerability to modify the file system as root.

The bug was discovered 01/02/2019. The weakness was disclosed 01/10/2019 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability is traded as CVE-2018-4035 since 01/02/2018. The attack needs to be approached locally. A authentication is required for exploitation. There are neither technical details nor an exploit publicly 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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