CVE-2021-33790

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The RebornCore library before 4.7.3 allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of reborncore.common.network.ExtendedPacketBuffer. An attacker can instantiate any class on the classpath with any data. A class usable for exploitation might or might not be present, depending on what Minecraft modifications are installed.

La biblioteca RebornCore versiones anteriores a 4.7.3, permite una ejecución de código remota porque deserializa datos no confiables en la función ObjectInputStream.readObject como parte de reborncore.common.network.ExtendedPacketBuffer. Un atacante puede crear una instancia de cualquier clase en la ruta de clases con cualquier dato. Una clase utilizable para explotación puede estar presente o no, dependiendo de las modificaciones de Minecraft instaladas

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-30 CVE Reserved
2021-05-31 CVE Published
2024-08-03 CVE Updated
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (3)

URL	Tag	Source
https://github.com/TechReborn/RebornCore/security/advisories/GHSA-r7pg-4xrf-7mrm	Third Party Advisory
https://vuln.ryotak.me/advisories/45	Third Party Advisory
https://www.curseforge.com/minecraft/mc-mods/reborncore	Product

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Techreborn Search vendor "Techreborn"	Reborncore Search vendor "Techreborn" for product "Reborncore"	<= 3.13.8 Search vendor "Techreborn" for product "Reborncore" and version " <= 3.13.8"	-	Affected	in	Minecraft Search vendor "Minecraft"	Minecraft Search vendor "Minecraft" for product "Minecraft"	-	-	Safe
Techreborn Search vendor "Techreborn"	Reborncore Search vendor "Techreborn" for product "Reborncore"	>= 3.19.0 < 3.19.5 Search vendor "Techreborn" for product "Reborncore" and version " >= 3.19.0 < 3.19.5"	-	Affected	in	Minecraft Search vendor "Minecraft"	Minecraft Search vendor "Minecraft" for product "Minecraft"	-	-	Safe
Techreborn Search vendor "Techreborn"	Reborncore Search vendor "Techreborn" for product "Reborncore"	>= 4.2.0 < 4.2.10 Search vendor "Techreborn" for product "Reborncore" and version " >= 4.2.0 < 4.2.10"	-	Affected	in	Minecraft Search vendor "Minecraft"	Minecraft Search vendor "Minecraft" for product "Minecraft"	-	-	Safe
Techreborn Search vendor "Techreborn"	Reborncore Search vendor "Techreborn" for product "Reborncore"	>= 4.7.0 < 4.7.3 Search vendor "Techreborn" for product "Reborncore" and version " >= 4.7.0 < 4.7.3"	-	Affected	in	Minecraft Search vendor "Minecraft"	Minecraft Search vendor "Minecraft" for product "Minecraft"	-	-	Safe