CVE-2024-44128 is a vulnerability in Apple macOS related to the Automator Quick Action workflows, which are user-created or prebuilt automation scripts that can perform various tasks. Normally, Gatekeeper enforces security by verifying the legitimacy of software before execution, preventing untrusted code from running silently. However, this vulnerability allows an Automator Quick Action workflow to bypass Gatekeeper's security checks, enabling execution without the usual user consent prompt. The vulnerability is classified under CWE-841, indicating improper enforcement of a security feature. The CVSS 3.1 base score is 5.5 (medium), with vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N, meaning the attack requires local access with low complexity, limited privileges, no user interaction, and impacts integrity but not confidentiality or availability. The vulnerability was reserved on August 20, 2024, and published on September 16, 2024. Apple fixed the issue by introducing an additional prompt for user consent in macOS Sequoia 15, Sonoma 14.7, and Ventura 13.7. No public exploits have been reported, but the flaw could be leveraged by local attackers or malicious insiders to run unauthorized workflows, potentially leading to unauthorized code execution or privilege escalation within the scope of the user's permissions.

The primary impact of CVE-2024-44128 is on the integrity of affected macOS systems. By bypassing Gatekeeper, an attacker with local access and limited privileges can execute Automator workflows that may perform unauthorized actions, potentially leading to malicious code execution or modification of system or user data. While confidentiality and availability are not directly impacted, the ability to run unauthorized code can facilitate further attacks such as persistence mechanisms or lateral movement within an organization. This vulnerability reduces the effectiveness of macOS's built-in security controls, increasing the risk of compromise on endpoints. Organizations relying on macOS devices, especially those with sensitive data or critical workflows, may face increased risk of insider threats or malware infections exploiting this bypass. The lack of required user interaction lowers the barrier for exploitation once local access is obtained, making it a concern for environments where endpoint security is critical.

To mitigate CVE-2024-44128, organizations should prioritize updating all affected macOS systems to versions macOS Sequoia 15, Sonoma 14.7, or Ventura 13.7 where the vulnerability is patched. Beyond patching, organizations should enforce strict endpoint security policies including limiting local user privileges to the minimum necessary, monitoring and restricting the creation and execution of Automator workflows, and employing application whitelisting solutions that can detect or block unauthorized automation scripts. Endpoint detection and response (EDR) tools should be configured to alert on unusual Automator activity or attempts to bypass Gatekeeper. Additionally, user education about the risks of running untrusted workflows and regular audits of installed Automator actions can reduce the attack surface. Network segmentation and limiting physical or remote access to macOS devices can further reduce the risk of local exploitation. Finally, organizations should maintain robust logging and monitoring to detect potential exploitation attempts early.