What is CVE-2021-33790?

CVE-2021-33790 is a vulnerability in the RebornCore library that allows remote code execution.

How does CVE-2021-33790 work?

CVE-2021-33790 works by deserializing untrusted data in ObjectInputStream.readObject, allowing an attacker to instantiate any class on the classpath with any data.

What is the severity of CVE-2021-33790?

CVE-2021-33790 has a severity rating of 9.8 (Critical).

Which software versions are affected by CVE-2021-33790?

Versions of Techreborn Reborncore 3.13.8 to 3.19.5, 4.2.0 to 4.2.10, and 4.7.0 to 4.7.3 are affected by CVE-2021-33790.

How can I fix CVE-2021-33790?

To fix CVE-2021-33790, it is recommended to update to RebornCore library version 4.7.3 or newer.

Vulnerability/
CVE-2021-33790

critical

9.8

CWE

502

31/5/2021

11/6/2021

CVE-2021-33790

First published: Mon May 31 2021(Updated: )

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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Techreborn Reborncore	<=3.13.8
Techreborn Reborncore	>=3.19.0<3.19.5
Techreborn Reborncore	>=4.2.0<4.2.10
Techreborn Reborncore	>=4.7.0<4.7.3
Minecraft Minecraft

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2021-33790?
CVE-2021-33790 is a vulnerability in the RebornCore library that allows remote code execution.
How does CVE-2021-33790 work?
CVE-2021-33790 works by deserializing untrusted data in ObjectInputStream.readObject, allowing an attacker to instantiate any class on the classpath with any data.
What is the severity of CVE-2021-33790?
CVE-2021-33790 has a severity rating of 9.8 (Critical).
Which software versions are affected by CVE-2021-33790?
Versions of Techreborn Reborncore 3.13.8 to 3.19.5, 4.2.0 to 4.2.10, and 4.7.0 to 4.7.3 are affected by CVE-2021-33790.
How can I fix CVE-2021-33790?
To fix CVE-2021-33790, it is recommended to update to RebornCore library version 4.7.3 or newer.

collector/nvd-index
agent/severity
agent/author
agent/references
agent/weakness
agent/description
agent/type
agent/tags
agent/event
vendor/techreborn
canonical/techreborn reborncore
version/techreborn reborncore/3.13.8
version/techreborn reborncore/3.19.0
version/techreborn reborncore/4.2.0
version/techreborn reborncore/4.7.0
vendor/minecraft
canonical/minecraft minecraft

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.