JVN#73346595
applican vulnerable to URL whitelist bypass
Overview
applican provided by Newphoria Corporation Inc. allows applications to access URLs that are not approved in the whitelist.
Products Affected
- Applications built using applican for Android versions 1.12.2 and earlier
- Applications built using applican for iOS versions 1.12.2 and earlier
Note that applican for iOS ver. 1.12.2 did not address the vulnerability completely. Newer versions have been released.
Description
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.
Impact
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.
Solution
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.
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
Analyzed on 2015.09.16 (CVSS Base Metrics)
| Measures | Severity | Description | ||
|---|---|---|---|---|
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) | A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable". |
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) | The access conditions are somewhat specialized. |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) | Authentication is not required to exploit the vulnerability. |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) | There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained. |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) | Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited. |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) | There is reduced performance or interruptions in resource availability. |
Base Score:6.8
Credit
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.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2015-5632 |
| JVN iPedia |
JVNDB-2015-000130 |
Update History
- 2015/09/16
- Information under the section "Products Affected" was modified.
- 2015/10/14
- Newphoria Corporation update status, and information under the section "Products Affected" was updated.