Category Archives: Advisories

Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution

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Multiple vulnerabilities have been discovered in Apple Products, the most severe of which could allow for arbitrary code execution.

macOS Ventura is the 19th and current major release of macOS
iOS is a mobile operating system for mobile devices, including the iPhone, iPad, and iPod touch.
iPadOS is the successor to iOS 12 and is a mobile operating system for iPads.
Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

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Multiple Vulnerabilities in Citrix ADC and Gateway Could Allow for Authentication Bypass

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Multiple vulnerabilities have been discovered in Citrix ADC and Gateway, the most severe of which could allow for Authentication Bypass. Citrix ADC and Gateway is an Application Delivery Controller and a gateway service to products respectively. Successful exploitation of the most severe of these vulnerabilities could result in Authentication Bypass. A malicious actor may be able to obtain administrative access. Depending on the permission associated with the application running the exploit, an attacker could then install programs; view, change, or delete data.

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CVE-2021-26391

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Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.

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CVE-2021-26392

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Insufficient verification of missing size check in ‘LoadModule’ may lead to an out-of-bounds write potentially allowing an attacker with privileges to gain code execution of the OS/kernel by loading a malicious TA.

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CVE-2021-26393

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Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE) may allow an authenticated attacker with privileges to generate a valid signed TA and potentially poison the contents of the process memory with attacker controlled data resulting in a loss of confidentiality.

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