CVE-2021-33790
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductTechreborn Reborncore
PublishedMay 31, 2021
First seenMay 31, 2021
How to fix
Update
- techreborn reborncore3.19.5, 4.2.10, 4.7.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| techreborn reborncore | v ≤ 3.13.8, 3.19.0 ≤ v < 3.19.5, 4.2.0 ≤ v < 4.2.10, 4.7.0 ≤ v < 4.7.3 | 3.19.5, 4.2.10, 4.7.3 |
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