WebKit CVE-2019-8846 Arbitrary Code Execution Vulnerability

Description

WebKit is prone to an arbitrary-code execution vulnerability. Attackers can exploit this issue to execute arbitrary code in the context of the affected application. Failed exploit attempts will likely cause a denial-of-service condition.

Technologies Affected

• Apple Safari 1.0.0
• Apple Safari 1.0.0
• Apple Safari 1.0.3
• Apple Safari 1.1.0
• Apple Safari 1.1.1
• Apple Safari 1.2.0
• Apple Safari 1.3.0
• Apple Safari 1.3.0
• Apple Safari 10
• Apple Safari 10.1
• Apple Safari 11
• Apple Safari 11.0.2
• Apple Safari 11.0.3
• Apple Safari 11.1
• Apple Safari 11.1.1
• Apple Safari 11.1.2
• Apple Safari 12
• Apple Safari 12.0.2
• Apple Safari 12.0.3
• Apple Safari 12.1.1
• Apple Safari 12.1.2
• Apple Safari 13
• Apple Safari 13.0.1
• Apple Safari 13.0.3
• Apple Safari 2
• Apple Safari 3
• Apple Safari 4
• Apple TV
• Apple iOS 10
• Apple iOS 10.1
• Apple iOS 10.2
• Apple iOS 10.3
• Apple iOS 11
• Apple iOS 11.1
• Apple iOS 11.2
• Apple iOS 11.3
• Apple iOS 11.4
• Apple iOS 12
• Apple iOS 12.1
• Apple iOS 12.2
• Apple iOS 12.3
• Apple iOS 12.4
• Apple iOS 13
• Apple iOS 13.1
• Apple iOS 13.2
• Apple iOS 2.1
• Apple iOS 3
• Apple iOS 3.1
• Apple iOS 3.2
• Apple iOS 4
• Apple iOS 4
• Apple iOS 4.1
• Apple iOS 4.2
• Apple iOS 4.2.10
• Apple iOS 4.3
• Apple iOS 5
• Apple iOS 5
• Apple iOS 6
• Apple iOS 6.1
• Apple iOS 7
• Apple iOS 7.0.1
• Apple iOS 7.0.2
• Apple iOS 7.1
• Apple iOS 8
• Apple iOS 8.1
• Apple iOS 8.2
• Apple iOS 8.3
• Apple iOS 8.4
• Apple iOS 9
• Apple iOS 9.1
• Apple iOS 9.2
• Apple iOS 9.3
• Apple iPadOS 13.1
• Apple iPadOS 13.2
• Apple iPadOS
• Apple tvOS 10
• Apple tvOS 11
• Apple tvOS 11.1
• Apple tvOS 11.2
• Apple tvOS 11.4
• Apple tvOS 12
• Apple tvOS 12.1.1
• Apple tvOS 12.2.1
• Apple tvOS 12.3
• Apple tvOS 12.4
• Apple tvOS 13
• Apple tvOS 13.2
• Apple tvOS 9.0
• Apple tvOS 9.1
• Apple tvOS 9.2
• Apple tvOS 9.2.2
• WebKit Open Source Project WebKit

Recommendations

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from a successful exploit.

Do not accept or execute files from untrusted or unknown sources.
To limit exposure to these and other latent vulnerabilities, never handle files that originate from unfamiliar or untrusted sources.

Do not follow links provided by unknown or untrusted sources.
To reduce the likelihood of attacks, never visit sites of questionable integrity or follow links provided by unfamiliar or untrusted sources.

Implement multiple redundant layers of security.
Since some of these issues may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploits of memory-corruption vulnerabilities.

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, run applications with the minimal amount of privileges required for functionality.

Updates are available. Please see the references or vendor advisory for more information.