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Urgent update for macOS and iOS! Two actively exploited zero-days fixed

Categories: Exploits and vulnerabilities Categories: News Tags: macOS

Tags: iOS

Tags: CVE-2022-32894

Tags: CVE-2022-32893

Tags: kernel privileges

Tags: WebKit

Tags: actively exploited

Tags: watering hole

Tags: exploit kit

Apple has released emergency security updates to fix two zero-day vulnerabilities previously exploited by attackers to hack iPhones, iPads, or Macs.

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The post Urgent update for macOS and iOS! Two actively exploited zero-days fixed appeared first on Malwarebytes Labs.

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#vulnerability#web#ios#mac#apple#auth#zero_day#webkit

Apple has released emergency security updates to fix two zero-day vulnerabilities previously exploited by attackers to hack iPhones, iPads, or Macs.

Publicly disclosed computer security flaws are listed in the Common Vulnerabilities and Exposures (CVE) database. Its goal is to make it easier to share data across separate vulnerability capabilities (tools, databases, and services). These are the CVEs you need to know:

Kernel privileges

CVE-2022-32894: An out-of-bounds write issue was addressed with improved bounds checking. The vulnerability could allow an application to execute arbitrary code with kernel privileges. The kernel privileges are the highest possible privileges, so an attacker could take complete control of a vulnerable system by exploiting this vulnerability.

Apple points out that they are aware of a report that this issue may have been actively exploited.

WebKit

CVE-2022-32893: An out-of-bounds write issue was addressed with improved bounds checking. Processing maliciously crafted web content may lead to arbitrary code execution. An attacker could lure a potential victim to a specially crafted website or use malvertising to compromise a vulnerable system by exploiting this vulnerability. Since the vulnerability exists in Apple’s HTML rendering software (WebKit). WebKit powers all iOS web browsers and Safari, so possible targets are iPhones, iPads, and Macs which could all be tricked into running unauthorized code.

Apple points out that they are aware of a report that this issue may have been actively exploited.

More details

Apple doesn’t disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. And even then, it depends on the anonymous researcher(s) that reported the vulnerabilities whether we will ever learn the technical details. Or when someone is able to reverse engineer the update that fixes the vulnerability.

That being said, it seems likely that these vulnerabilities were found in an active attack that chained the two vulnerabilities together. The attack could, for example, be done in the form of a watering hole or as part of an exploit kit. CVE-2022-32892 could be exploited for initial code to be run. This code could be used to leverage CVE-2022-32894 to obtain kernel privileges

Mitigation

Users are under advice to implement the updates as soon as possible, by upgrading to:

  • iOS 15.6.1
  • iPadOS 15.6.
  • macOS Monterey 12.5.1

Details can be found on the security content for macOS page. And instructions to apply updates are available on the Apple Security Updates page.

Stay safe, everyone!

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