JVN#89046645
A map plugin for Minecraft server "Dynmap" fails to restrict access permissions
Overview
A map plugin for Minecraft server "Dynmap" fails to restrict access permissions.
Products Affected
- Dynmap v3.0-beta-3 and earlier
Description
A map plugin for Minecraft server "Dynmap" fails to restrict access permissions (CWE-284).
Impact
Under the circumstance where a user is required to login Dynmap, a remote attacker may bypass the login authentication and be able to see a map image that requires authentication.
Solution
Update the Plugin
Update to the latest version of Dynmap according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| Webbukkit | webbukkit/dynmap - GitHub |
| Pull Request #2475: Fix required login bypass vulnerability |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
RyotaK directly reported this vulnerability to the developer and coordinated on his own.
After coordination was completed, this case was reported to IPA, and JPCERT/CC coordinated with the developer for the publication under Information Security Early Warning
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-2019-12395 |
| JVN iPedia |
JVNDB-2019-000037 |
Update History
- 2019/07/05
- Fixed typographical errors.