Pierluigi Paganini April 10, 2023

US Cybersecurity and Infrastructure Security Agency (CISA) added two flaws in iPhones, Macs, and iPads to its Known Exploited Vulnerabilities catalog.

U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added the following five new issues to its Known Exploited Vulnerabilities Catalog:

• CVE-2023-28205 – Apple Multiple Products WebKit Use-After-Free Vulnerability;
• CVE-2023-28206 – Apple iOS, iPadOS, and macOS IOSurfaceAccelerator Out-of-Bounds Write Vulnerability;

This week Apple has released emergency security updates to address the above actively exploited zero-day vulnerabilities impacting iPhones, Macs, and iPads.

Impacted devices include:

• iPhone 8 and later,
• iPad Pro (all models),
• iPad Air 3rd generation and later,
• iPad 5th generation and later,
• iPad mini 5th generation and later,
• and Macs running macOS Ventura.

Both vulnerabilities were reported by Clément Lecigne of Google’s Threat Analysis Group and Donncha Ó Cearbhaill of Amnesty International’s Security Lab.

The zero-day CVE-2023-28205 is a use after free issue that resides in the WebKit, its exploitation may lead to arbitrary code execution. An attacker can trigger the flaw by tricking the victims into loading maliciously crafted web pages.

“Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.” reads the advisory.

The IT giant addressed the flaw with improved memory management.

The zero-day CVE-2023-28206 is an out-of-bounds write issue that resides in the IOSurfaceAccelerator.

“An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.” reads the advisory.

The company addressed the flaw with improved input validation.

Apple addressed the zero-day issue with the release of macOS Ventura 13.3.1, iOS 16.4.1, iPadOS 16.4.1, and Safari 16.4.1.

According to Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities, FCEB agencies have to address the identified vulnerabilities by the due date to protect their networks against attacks exploiting the flaws in the catalog.

Experts recommend also private organizations review the Catalog and address the vulnerabilities in their infrastructure.

CISA orders federal agencies to fix this flaw by May 1st, 2023.

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Pierluigi Paganini