Apple iOS up to 12.1.4 IOHIDFamily memory corruption

Summaryinfo

A vulnerability classified as critical was found in Apple iOS up to 12.1.4. This affects an unknown part of the component IOHIDFamily. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2019-8545. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple iOS up to 12.1.4 (Smartphone Operating System). It has been declared as critical. This vulnerability affects an unknown function of the component IOHIDFamily. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, tvOS 12.2, watchOS 5.2. A local user may be able to cause unexpected system termination or read kernel memory.

The bug was discovered 03/25/2019. The weakness was shared 03/25/2019 by Jakub Wilk with Zimperium zLabs as HT209599 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2019-8545 since 02/18/2019. The attack needs to be approached locally. The successful exploitation requires a single authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/20/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A memory corruption issue was addressed with improved state management.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 371712 (Apple macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra Not Installed (APPLE-SA-2019-3-25-2)).

Upgrading to version 12.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 104423†). The entries VDB-119252, VDB-132233, VDB-132234 and VDB-132235 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS

Version

• 12.1.0
• 12.1.1
• 12.1.2
• 12.1.3
• 12.1.4

License

• commercial

Website

• Vendor: https://www.apple.com/

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Once again VulDB remains the best source for vulnerability data.

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