Published:2012/12/20  Last Updated:2012/12/20

Opera Mini / Opera Mobile for Android vulnerable in the WebView class


Opera Mini and Opera Mobile for Android contain a vulnerability in the WebView class.

Products Affected

  • Opera Mini versions for Android prior to 7.5
  • Opera Mobile for Android versions prior to 12.1


Opera Mini and Opera Mobile are web browsers for mobile devices. Opera Mini and Opera Mobile for Android contain a vulnerability in the WebView class.


If a user of the affected product uses another malicious Android application, information managed by the product may be disclosed.


Update the software
Update to the latest version according to the information provided by the developer.


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the user must be convinced to take a difficult or suspicious action. If the honest user must have elevated privileges, they are likely to be more suspicious
  • Low
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


This analysis assumes that the user is tricked into installing a malicious application.


Gaku Mochizuki of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2012-5180
JVN iPedia JVNDB-2012-000112