SmartFoxServer 2X 2.17.0 God Mode Console Remote Code Execution
Title: SmartFoxServer 2X 2.17.0 God Mode Console Remote Code Execution
Advisory ID: ZSL-2021-5628
Type: Local/Remote
Impact: System Access, DoS
Risk: (3/5)
Release Date: 07.02.2021
Remote Admin: 3.2.6
SmartFoxServer 2X, Pro, Basic
Linux/Unix 64bit installer
MacOS (10.8+) 64bit installer
Java 1.8.0_281
Python 3.9.1
Python 2.7.14
[29.01.2021] Asked vendor about the console module, how to enable it.
[30.01.2021] No response.
[31.01.2021] Vendor contacted.
[01.02.2021] Vendor asks more details.
[01.02.2021] Sent details to the vendor.
[01.02.2021] Vendor responds.
[01.02.2021] Replied to the vendor, asking for a plan.
[03.02.2021] Vendor will fix the Credentials Disclosure. Other issues are working as expected.
[07.02.2021] Public security advisory released.
[2] https://nvd.nist.gov/vuln/detail/CVE-2021-26551
[3] https://www.exploit-db.com/exploits/49526
[4] https://cxsecurity.com/issue/WLB-2021020027
[5] https://packetstormsecurity.com/files/161340/
[6] https://exchange.xforce.ibmcloud.com/vulnerabilities/196353
[7] https://www.tenable.com/cve/CVE-2021-26551
[10.02.2021] - Added reference [3], [4], [5], [6] and [7]
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Advisory ID: ZSL-2021-5628
Type: Local/Remote
Impact: System Access, DoS
Risk: (3/5)
Release Date: 07.02.2021
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.Description
An authenticated attacker can execute remote arbitrary Python code after enabling and unlocking the undocumented console module.Vendor
gotoAndPlay() - https://www.smartfoxserver.comAffected Version
Server: 2.17.0Remote Admin: 3.2.6
SmartFoxServer 2X, Pro, Basic
Tested On
Windows (all) 64bit installerLinux/Unix 64bit installer
MacOS (10.8+) 64bit installer
Java 1.8.0_281
Python 3.9.1
Python 2.7.14
Vendor Status
[29.01.2021] Vulnerability discovered.[29.01.2021] Asked vendor about the console module, how to enable it.
[30.01.2021] No response.
[31.01.2021] Vendor contacted.
[01.02.2021] Vendor asks more details.
[01.02.2021] Sent details to the vendor.
[01.02.2021] Vendor responds.
[01.02.2021] Replied to the vendor, asking for a plan.
[03.02.2021] Vendor will fix the Credentials Disclosure. Other issues are working as expected.
[07.02.2021] Public security advisory released.
PoC
sfs_rce.txtCredits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>References
[1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=2021-26551[2] https://nvd.nist.gov/vuln/detail/CVE-2021-26551
[3] https://www.exploit-db.com/exploits/49526
[4] https://cxsecurity.com/issue/WLB-2021020027
[5] https://packetstormsecurity.com/files/161340/
[6] https://exchange.xforce.ibmcloud.com/vulnerabilities/196353
[7] https://www.tenable.com/cve/CVE-2021-26551
Changelog
[07.02.2021] - Initial release[10.02.2021] - Added reference [3], [4], [5], [6] and [7]
Contact
Zero Science LabWeb: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
