CVE-2024-27834

The issue was addressed with improved checks. This issue is fixed in iOS 17.5 and iPadOS 17.5, tvOS 17.5, Safari 17.5, watchOS 10.5, macOS Sonoma 14.5. An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication.

Weakness

A product defines a set of insecure permissions that are inherited by objects that are created by the program.

Affected Software

Potential Mitigations

• Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
• Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

• http://seclists.org/fulldisclosure/2024/May/10
• http://seclists.org/fulldisclosure/2024/May/12
• http://seclists.org/fulldisclosure/2024/May/16
• http://seclists.org/fulldisclosure/2024/May/17
• http://seclists.org/fulldisclosure/2024/May/9
• http://www.openwall.com/lists/oss-security/2024/05/21/1
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ADCLQW54XN37VJZNYD3UKCYATJFIMYXG/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WKIXADCW3O4R2OOSDZGPU55XQFE6NA3M/
• https://support.apple.com/en-us/HT214101
• https://support.apple.com/en-us/HT214102
• https://support.apple.com/en-us/HT214103
• https://support.apple.com/en-us/HT214104
• https://support.apple.com/en-us/HT214106