CVE-2021-33790 Deserialization in n/a
Remote attackers can execute arbitrary code by sending malicious serialized data to the RebornCore library used in Minecraft mods.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33790?
CVE-2021-33790 is a critical unsafe deserialization vulnerability in n/a, published on 31 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-502
Which versions are affected by CVE-2021-33790?
It affects 1 product.
Products include Techreborn Reborncore.
How do I fix CVE-2021-33790?
No fix has been published for CVE-2021-33790 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-33790 being exploited?
There is no known exploitation of CVE-2021-33790 in the wild and no public exploit code.