applican vulnerable to URL whitelist bypass


applican provided by Newphoria Corporation Inc. is a platform to build hybrid applications for both iOS and Android. applican provides a whitelisting function (whitelist.xml) to limit the URLs that applications can access. However, if the application is launched using the URL-scheme, the access restriction is bypassed and URLs that are not whitelisted can be accessed. If an API of applican framework is specified in the URL, the API will be called in the context of the URL.

Kenta Suefusa and Tomonori Shiomi of Sprout Inc. 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 6.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Newphoria Corporation
  • applican (for Android) versions 1.12.2 and earlier
  • applican (for iOS) versions 1.12.2 and earlier

Applications built using applican are also affected by this vulnerability.

[Added on October 14, 2015]
Note that applican for iOS ver. 1.12.2 did not address the vulnerability completely. Newer versions have been released.

Android apps built using applican may allow an applican API to be executed if that API has been granted permission in the android manifest.
iOS apps built using applican may allow an arbitrary API to be executed.

[Update applican and rebuild the application]
Update to the latest version of applican and rebuild the application according to the information provided by the developer.
Vendor Information

Newphoria Corporation
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2015-5632

  1. JVN : JVN#73346595
  2. National Vulnerability Database (NVD) : CVE-2015-5632
Revision History

  • [2015/09/16]
      Web page was published
      References : Content was added
      Affected Products : Content was added