CVE-2023-42844

This issue was addressed with improved handling of symlinks. This issue is fixed in macOS Sonoma 14.1, macOS Monterey 12.7.1, macOS Ventura 13.6.1. A website may be able to access sensitive user data when resolving symlinks.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• http://seclists.org/fulldisclosure/2023/Oct/21
• http://seclists.org/fulldisclosure/2023/Oct/24
• http://seclists.org/fulldisclosure/2023/Oct/26
• https://support.apple.com/en-us/HT213983
• https://support.apple.com/en-us/HT213984
• https://support.apple.com/en-us/HT213985
• https://support.apple.com/kb/HT213983
• https://support.apple.com/kb/HT213984
• https://support.apple.com/kb/HT213985
• http://seclists.org/fulldisclosure/2023/Oct/21
• http://seclists.org/fulldisclosure/2023/Oct/24
• http://seclists.org/fulldisclosure/2023/Oct/26
• https://support.apple.com/en-us/HT213983
• https://support.apple.com/en-us/HT213984
• https://support.apple.com/en-us/HT213985
• https://support.apple.com/kb/HT213983
• https://support.apple.com/kb/HT213984
• https://support.apple.com/kb/HT213985