CVE-2021-23253

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.

5.3

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.24%

Vendor Advisory opera.com

Affected: n/a Opera Mini for Android

References

Link	Tags
https://security.opera.com/address-bar-spoofing-in-opera-mini-opera-security-advisories/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-23253?: CVE-2021-23253 has been scored as a medium severity vulnerability.
How to fix CVE-2021-23253?: To fix CVE-2021-23253, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-23253 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-23253 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-23253?: CVE-2021-23253 affects n/a Opera Mini for Android.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.