In this detailed report, we'll be discussing a crucial vulnerability that has been impacting Firefox for iOS versions less than 123. The vulnerability, which has been assigned the identifier CVE-2024-26283, poses a significant risk to users as it allows an attacker to execute unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme.
Let's dive into the details of this vulnerability, the affected versions, links to original references, code snippets showcasing the exploit, and possible mitigation steps.
Vulnerability Details
An attacker leveraging this vulnerability can execute malicious scripts on top origin sites when a victim opens an external URL with a custom Firefox scheme in the affected versions. This unauthorized access undermines the security of Firefox for iOS users and compromises the integrity of websites.
Affected Versions
The vulnerability impacts Firefox for iOS versions less than 123.
Exploit Details
In the affected versions, an attacker could craft malicious JavaScript URIs to be executed on top origin sites when an external URL with a custom Firefox scheme is opened. It is possible to embed these JavaScript URIs into legitimate websites or emails as part of phishing attacks, social engineering scams, or other deceptive tactics to compromise a user's security. The following code snippet demonstrates an example of such a craft:
<a href="firefox://open-url?url=javascript:alert('Unauthorized script execution on top origin site')">
Click to trigger CVE-2024-26283 exploit
</a>
When a user clicks on the link in the affected Firefox for iOS version, the unauthorized script is executed on the top origin site, compromising the user's security.
Original References
For more information and further insight into this vulnerability, please refer to the following original resources:
1. Mozilla Security Advisory
2. CVE-2024-26283 Details
3. Mozilla Bugzilla Report
To mitigate the risks associated with this vulnerability, the following steps are recommended
1. Immediate update: Update Firefox for iOS to the latest version (123 or higher) as soon as possible to ensure that the vulnerability is patched. Click here to download the latest version of Firefox for iOS.
2. Caution with unknown links: Be cautious when clicking on unfamiliar links, especially those embedded in emails and websites that seem untrustworthy.
3. Regularly update software: Keep your software up-to-date and enable automatic updates to receive the latest security patches.
In conclusion, the CVE-2024-26283 vulnerability presents significant security risks for users of Firefox for iOS versions less than 123. By following the mitigation steps and investigating the provided resources further, those who are affected can better protect themselves from unauthorized script execution and other potential threats.
Timeline
Published on: 02/22/2024 15:15:08 UTC
Last modified on: 02/22/2024 19:07:27 UTC