Published:2012/07/13  Last Updated:2012/07/20

Yahoo! Browser vulnerable in the WebView class


Yahoo! Browser contains a vulnerability in the WebView class.

Products Affected

  • Yahoo! Browser 1.2.1 and earlier

According to the developer, it was found that version 1.2.1 released on 2012/7/13 did not resolve the vulnerability, therefore, the developer released version 1.2.2 on 2012/7/18 to address the reported issue.


Yahoo! Browser is a web browser for Android devices. Yahoo! Browser contains a vulnerability in the WebView class.


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


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

Vendor Status

Vendor Link
Yahoo Japan Corporation Yahoo! Browser


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2012.07.13

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-2012-2645
JVN iPedia JVNDB-2012-000070

Update History

Information under the section "Products Affected" was updated.