Improper access control in Dynmap



Published: 2019-06-03 | Updated: 2020-01-29
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-12395
CWE-ID CWE-284
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Dynmap
Client/Desktop applications / Games

Vendor Webbukkit

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper access control

EUVDB-ID: #VU18662

Risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:U/RC:C]

CVE-ID: CVE-2019-12395

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.

The vulnerability exists due to a missing login check in "servlet/MapStorageHandler.java". A remote attacker can see a map image without login despite an enabled "login-required" setting.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Dynmap: 3.0 beta-3

External links

http://github.com/webbukkit/dynmap/commit/641f142cd3ccdcbfb04eda3059be22dd9ed93783
http://github.com/webbukkit/dynmap/issues/2474
http://github.com/webbukkit/dynmap/pull/2475


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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