Apple tvOS up to 12.1 Kernel input validation

Summaryinfo

A vulnerability has been found in Apple tvOS up to 12.1 and classified as problematic. The impacted element is an unknown function of the component Kernel. This manipulation causes input validation. This vulnerability is registered as CVE-2018-4460. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Apple tvOS up to 12.1 (Digital Media Player). Affected by this vulnerability is an unknown part of the component Kernel. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

A denial of service issue was addressed by removing the vulnerable code. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.

The bug was discovered 12/05/2018. The weakness was published 12/05/2018 by Kevin Backhouse with Semmle as HT209342 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2018-4460 since 01/02/2018. The exploitation appears to be easy. The attack can be launched remotely. A single authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

A denial of service issue was addressed by removing the vulnerable code.

The vulnerability scanner Nessus provides a plugin with the ID 119841 (macOS 10.14.x < 10.14.2 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371369 (Apple macOS Mojave 10.14.2, Security Update 2018-003 High Sierra, Security Update 2018-006 Sierra Not Installed(HT209341)).

Upgrading to version 12.1.1 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 Tenable (119841). Similar entries are available at VDB-126171, VDB-127563, VDB-127564 and VDB-127567. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Digital Media Player

Vendor

• Apple

Name

• tvOS

Version

• 12.0
• 12.1

License

• commercial

Website

• Vendor: https://www.apple.com/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion