jigbrowser+ for iOS same origin policy bypass


jigbrowser+ for iOS contains a flaw in loading web pages, which may allow an attacker to bypass the same origin policy.

Toshiharu Sugiyama of DeNA Co., Ltd. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 5.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

jig.jp co., ltd.
  • jigbrowser+ for iOS Ver.1.8.1 and earlier


By using JavaScript, an attacker may obtain sensitive data from a different domain in violation of the same origin policy.

[Update the Software]
Update to the latest version according to the information provided by the developer.
Vendor Information

jig.jp co., ltd.
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2014-5318

  1. JVN : JVN#80531230
  2. National Vulnerability Database (NVD) : CVE-2014-5318
Revision History

  • [2014/09/25]
      Web page was published
      References : Content was added