Remote code execution in BDew BdLib library for Minecraft



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-33806
CWE-ID CWE-502
Exploitation vector Network
Public exploit N/A
Vulnerable software
 BdLib
Universal components / Libraries / Libraries used by multiple products

Vendor bdew-minecraft

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU53836

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-33806

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data in the "ObjectInputStream.readObject()" function. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BdLib: 1.16.1.6

CPE2.3 External links

https://bdew.net
https://github.com/bdew-minecraft/bdlib/commit/447210530ceec72fb3374efecb0930ed359d2297
https://www.curseforge.com/minecraft/mc-mods/bdlib/files/3331330
https://vuln.ryotak.me/advisories/46


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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