JVN#67586379
Reversi vulnerable to URL whitelist bypass
Overview
Reversi provided by Newphoria Corporation Inc. allows applications to access URLs that are not approved in the whitelist.
Products Affected
- Reversi for Android versions 1.0.2 and earlier
- Reversi for iOS versions 1.1 and earlier
Description
Reversi provided by Newphoria Corporation Inc. is an application for both iOS or Android built using "applican". Reversi contains an issue where an arbitrary page may be loaded if the application is launched using the URL-scheme.
Impact
Android version of this app may allow an applican API to be executed if that API has been granted permission in the android manifest.
iOS version of this app may allow an arbitrary API to be executed.
Solution
Update the Software
Update to the latest version 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-2015-5636 |
| JVN iPedia |
JVNDB-2015-000134 |