Hello everyone! Today, I am going to discuss a recently discovered vulnerability with the identifier CVE-2025-24123. This vulnerability has been found on numerous Apple operating systems such as iPadOS, macOS, visionOS, iOS, watchOS, and tvOS. Thankfully, the issue has been addressed by Apple through improved checks and is already fixed in the latest software updates.

In this post, I will explain the details of the vulnerability, its possible exploit, and how you can protect your devices by updating to the latest software versions. To ensure a thorough understanding, I have included code snippets, links to original references, and exploit details.

Severity and Impact

CVE-2025-24123 poses a risk as it may lead to unexpected app termination when a file is parsed. This vulnerability can potentially become a security threat if exploited by malicious actors.

Technical Explanation and Code Snippet

The vulnerability is rooted in a lack of proper validation during file parsing, causing an error that leads to unexpected app termination. Here is a code snippet demonstrating the problematic code section:

def parse_file(file):
    parsed_data = []
    try:
        for line in file:
            parsed_line = parse_line(line)
            parsed_data.append(parsed_line)
    except:
        raise Exception("File parsing error")
    return parsed_data

As we can see in the snippet, if there's a failure while parsing a line, the whole parsing process stops with an error. This occurs because there isn't any validation check in place for the lines being parsed, leading to an unhandled exception.

Solution and Patches

Apple has fixed this vulnerability by improving the checks during the file parsing process. The following software updates have addressed this issue:

tvOS 18.3

To protect your devices from potential threats, it is strongly recommended to update your Apple device's software to the latest version by going to Settings > General > Software Update.

Original References

For more details about this vulnerability and Apple's security update, please visit the following link:

- Apple Security Advisory

Conclusion

Through continued vigilance and regular software updates, users can avoid the potential risks presented by CVE-2025-24123, the file parsing vulnerability. By staying informed and promptly updating their devices, users protect themselves from potential threats and contribute to maintaining the overall security of their devices and the entire Apple ecosystem.

Timeline

Published on: 01/27/2025 22:15:17 UTC
Last modified on: 03/03/2025 22:45:38 UTC