JVN#08494613
NScripter vulnerable to buffer overflow
Overview
NScripter contains a buffer overflow vulnerability.
Products Affected
- NScripter prior to Ver3.00
- Games built using NScripter prior to Ver3.00
Description
NScripter is a script engine to build and execute games. NScripter contains a buffer overflow vulnerability due to a flaw in processing save data.
Impact
By processing a specially crafted save data, arbitrary code may be executed.
Solution
For developers using NScripter:
Update and Rebuild the Game
Update NScripter to the latest version according to the information provided by the developer and rebuild the games.
For users of the games built using NScripter:
Update the Game
Update the game to the latest version according to the information provided by each repsective game developer.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| Naoki Takahashi | Vulnerable | 2015/09/02 | Naoki Takahashi website |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
Analyzed on 2015.09.02 (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
Kusano Kazuhiko 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-2015-2991 |
| JVN iPedia |
JVNDB-2015-000123 |