Vulnerability Description
Opera Mini for Android below 53.1 displays URL left-aligned in the address field. This allows a malicious attacker to craft a URL with a long domain name, e.g. www.safe.opera.com.attacker.com. With the URL being left-aligned, the user will only see the front part (e.g. www.safe.opera.com…) The exact amount depends on the phone screen size but the attacker can craft a number of different domains and target different phones. Starting with version 53.1 Opera Mini displays long URLs with the top-level domain label aligned to the right of the address field which mitigates the issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opera | Opera Mini | < 53.1 |
References
- https://security.opera.com/address-bar-spoofing-in-opera-mini-opera-security-advVendor Advisory
- https://security.opera.com/address-bar-spoofing-in-opera-mini-opera-security-advVendor Advisory
FAQ
What is CVE-2021-23253?
CVE-2021-23253 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Opera Mini for Android below 53.1 displays URL left-aligned in the address field. This allows a malicious attacker to craft a URL with a long domain name, e.g. www.safe.opera.com.attacker.com. With th...
How severe is CVE-2021-23253?
CVE-2021-23253 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-23253?
Check the references section above for vendor advisories and patch information. Affected products include: Opera Opera Mini.