CVE-2021-40835 URL Address Bar Spoofing in F-Secure SAFE Browser for iOS
Attackers can spoof the URL address bar in F-Secure SAFE Browser for iOS by hiding the domain behind a long username, tricking users into trusting malicious sites.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-40835?
CVE-2021-40835 is a medium-severity vulnerability in F-Secure Mobile Security, published on 16 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An URL Address bar spoofing vulnerability was discovered in Safe Browser for iOS. When user clicks on a specially crafted a malicious URL, if user does not carefully pay attention to url, user may be tricked to think content may be coming from a valid domain, while it comes from another. This is performed by using a very long username part of the url so that user cannot see the domain name. A remote attacker can leverage this to perform url address bar spoofing attack. The fix is, browser no longer shows the user name part in address bar.
Which versions are affected by CVE-2021-40835?
It affects 1 product.
Products include F-Secure Safe.
How do I fix CVE-2021-40835?
No fix has been published for CVE-2021-40835 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-40835 being exploited?
There is no known exploitation of CVE-2021-40835 in the wild and no public exploit code.
Other vulnerabilities in F-Secure Mobile Security
- CVE-2020-14977 Race condition in n/a
- CVE-2020-14978 Privilege escalation in n/a
- CVE-2022-38164 Security feature bypass in n/a
- CVE-2021-44748 Universal Cross-Site Scripting Vulnerability in F-Secure SAFE Browser for Android
- CVE-2021-44749 Universal Cross-Site Scripting Vulnerability in F-Secure SAFE Browser Protection for Android
Sources
Also known as GHSA-75cm-2vvh-47g6.