Full Report
CVE-2024-23204 sheds light on the critical importance of continuous security vigilance. Apple's Shortcuts application, designed to enhance user automation, can inadvertently become a potential vector for privacy breaches. This analysis aims to provide users, developers, and security professionals with insights into the nature of the vulnerability, its potential impact, and recommended mitigation measures. At a glance: * We have discovered a vulnerability in Apple Shortcuts that lets a potent
Analysis Summary
# Vulnerability: Apple Shortcuts TCC Bypass Leading to Sensitive Data Exfiltration
## CVE Details
- CVE ID: CVE-2024-23204
- CVSS Score: 7.5 (High)
- CWE: [Not explicitly stated, likely related to Improper Access Control/Bypass of Security Policy]
## Affected Systems
- Products: Apple Shortcuts application on macOS, iOS, and iPadOS
- Versions:
- macOS versions prior to 14.3
- iOS versions prior to 17.3
- iPadOS versions prior to 17.3
- Configurations: Any system running the affected software versions that executes a crafted Shortcut.
## Vulnerability Description
This vulnerability resides within Apple Shortcuts, allowing a maliciously crafted Shortcut file to bypass the Transparency, Consent, and Control (TCC) framework. Specifically, the "**Expand URL**" function was leveraged to facilitate the exfiltration of sensitive user data (such as Photos, Contacts, Files, and Clipboard Data) without triggering mandatory user consent prompts. The shortcut could import this sensitive data, base64 encode it, and transmit it to an attacker-controlled external server.
## Exploitation
- Status: Implies the potential for exploitation via shared/imported malicious shortcuts, but details suggest responsible disclosure/fixing before widespread public exploitation. (Treated as **PoC available** based on detailed reproduction steps provided in the source.)
- Complexity: Medium (Requires crafting the specific base64 encoding and external server interaction)
- Attack Vector: Network (Exfiltration occurs over the network to a malicious endpoint)
## Impact
- Confidentiality: High (Sensitive user data is stolen without user awareness)
- Integrity: Low (No direct modification of system files mentioned, primarily exfiltration)
- Availability: Low (No direct denial of service described)
## Remediation
### Patches
- **macOS Sonoma 14.3**
- **iOS 17.3**
- **iPadOS 17.3**
- *Note: The source also mentions watchOS updates were released.*
### Workarounds
- Exercise extreme caution when importing or executing Shortcuts from untrusted sources or unknown authors.
## Detection
- **Indicators of Compromise (IoCs):** Unusual network connections originating from processes associated with Shortcut execution (*com.apple.WorkflowKit.BackgroundShortcutRunner*) attempting to connect to external, potentially unknown URLs with large, encoded data payloads.
- **Detection Methods and Tools:** Monitoring outbound network traffic from the system for suspicious connections originating from the Shortcuts execution context or analyzing system logs for unexpected TCC requests or denials that might point to unauthorized background activity related to data handling actions.
## References
- Vendor Advisory (macOS): https://support.apple.com/HT214060
- Vendor Advisory (iOS): https://support.apple.com/HT214059
- Vendor Advisory (iPadOS): https://support.apple.com/HT214061