Executive Summary

The vulnerability exists in Slate Digital Connect 1.37.0 for macOS, which installs a privileged helper tool that exposes an XPC service. The helper tool validates connecting clients by checking their process identifier (PID) and retrieving code-signing information. However, this validation method is flawed because PIDs can be reused, creating a time-of-check time-of-use race condition.

An attacker with local access can exploit this PID reuse to trick the helper tool into validating a trusted process instead of the actual connecting process. This bypass allows unauthorized access to privileged helper functions.

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Impact Analysis

This vulnerability can lead to local privilege escalation, meaning a local attacker could gain higher privileges on the affected system than they are normally allowed.

By exploiting the race condition in PID validation, an attacker can access privileged helper functionality without proper authorization, potentially compromising system security and integrity.

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Compliance Impact

The vulnerability in Slate Digital Connect 1.37.0 allows local attackers to escalate privileges to root by exploiting insecure XPC client validation. This unauthorized privilege escalation can lead to unauthorized access to sensitive system functions and data.

Such unauthorized access and potential data compromise could negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require strict controls on access to sensitive data and systems to protect confidentiality and integrity.

Since the vendor has not released a patch and the vulnerability allows bypassing security controls, organizations using this software may face increased risk of non-compliance due to insufficient protection against privilege escalation attacks.

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Detection Guidance

Detection of this vulnerability involves identifying the presence of the vulnerable Slate Digital Connect macOS application version 1.37.0 and its privileged helper tool, com.slatedigital.connect.privileged.helper.tool.

Since the vulnerability exploits PID reuse in the XPC client validation, monitoring for unusual or unauthorized use of the helper tool or unexpected privilege escalations may help in detection.

Specific commands to detect the vulnerable helper tool could include checking for the running process or installed service, for example:

• Use `ps aux | grep com.slatedigital.connect.privileged.helper.tool` to check if the helper tool is running.
• Use `launchctl list | grep com.slatedigital.connect` to see if the XPC service is registered.
• Verify the installed application version with `mdls -name kMDItemVersion /Applications/Slate\ Digital\ Connect.app` to confirm if version 1.37.0 is present.

Additionally, monitoring system logs for suspicious privilege escalation attempts related to this helper tool may assist in detection.

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Mitigation Strategies

Immediate mitigation steps include avoiding use of the vulnerable Slate Digital Connect version 1.37.0 until a patch is released.

Since the vendor has been unresponsive and no patch is available, users should consider uninstalling or disabling the vulnerable application and its privileged helper tool to prevent exploitation.

Perform a security review of the product and monitor for any suspicious activity related to privilege escalation attempts.

Contact the vendor, Slate Digital, to request a fix or update regarding this vulnerability.

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