CVE-2021-1801 Explained : Impact and Mitigation

This CVE-2021-1801 impacts multiple Apple products like iOS and iPadOS, macOS, watchOS, and tvOS due to a vulnerability related to iframe sandbox enforcement.

Understanding CVE-2021-1801

This vulnerability was addressed by enhancing iframe sandbox enforcement in the affected Apple products.

What is CVE-2021-1801?

CVE-2021-1801 refers to a security issue in various Apple products, allowing malicious web content to bypass iframe sandbox policy.

The Impact of CVE-2021-1801

The vulnerability could be exploited by attackers to create maliciously crafted web content, potentially breaching the iframe sandboxing policy.

Technical Details of CVE-2021-1801

The vulnerability affects several versions of iOS and iPadOS, macOS, watchOS, and tvOS, with specific version details as follows:

Vulnerability Description

This flaw enables attackers to violate iframe sandboxing policy, posing a threat to the integrity of the affected systems.

Affected Systems and Versions

iOS and iPadOS less than 14.4
macOS less than 11.2
macOS less than 7.3
macOS less than 14.4

Exploitation Mechanism

Maliciously crafted web content can exploit this vulnerability to evade the iframe sandboxing restrictions put in place.

Mitigation and Prevention

Efforts to mitigate and prevent exploitation of CVE-2021-1801 include:

Immediate Steps to Take

Users of the impacted Apple products are advised to update to the fixed versions immediately to safeguard against potential threats.

Long-Term Security Practices

Implementing strong web security practices, regularly updating systems, and being cautious while browsing can help prevent such vulnerabilities.

Patching and Updates

Apple has released fixes for this vulnerability in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4, and iPadOS 14.4 to address the iframe sandbox enforcement issue in the affected products.