CVE-2022-28345: High severity signal vulnerability
The Signal app before 5.34 for iOS allows URI spoofing via RTLO injection. It incorrectly renders RTLO encoded URLs beginning with a non-breaking space, when there is a hash character in the URL. This technique allows a remote unauthenticated attacker to send legitimate looking links, appearing to be any website URL, by abusing the non-http/non-https automatic rendering of URLs. An attacker can spoof, for example, example.com, and masquerade any URL with a malicious destination. An attacker requires a subdomain such as gepj, txt, fdp, or xcod, which would appear backwards as jpeg, txt, pdf, and docx respectively.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2022-28345?
CVE-2022-28345 is a vulnerability in the Signal app before version 5.34 for iOS that allows URI spoofing via RTLO injection.
How severe is CVE-2022-28345?
CVE-2022-28345 has a severity rating of 7.5, which is considered high.
How does CVE-2022-28345 work?
CVE-2022-28345 incorrectly renders RTLO encoded URLs beginning with a non-breaking space when there is a hash character in the URL, allowing a remote unauthenticated attacker to send legitimate-looking links.
What is the affected software of CVE-2022-28345?
The affected software is Signal app for iOS versions before 5.34.
Is there a fix for CVE-2022-28345?
Yes, updating Signal app to version 5.34 or later fixes the CVE-2022-28345 vulnerability.