CVE-2023-33496 xxl-rpc deserialization vulnerability

Critical 9.8 Published Updated

Attackers can execute arbitrary code by sending malicious serialized data to the xxl-rpc library's Netty decoder.

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-2023-33496?

CVE-2023-33496 is a critical unsafe deserialization vulnerability in n/a, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

xxl-rpc v1.7.0 was discovered to contain a deserialization vulnerability via the component com.xxl.rpc.core.remoting.net.impl.netty.codec.NettyDecode#decode.

Weakness: CWE-502

Which versions are affected by CVE-2023-33496?

2 open source packages ship an affected version, including com.xuxueli:xxl-rpc-core. It affects 1 product.

PackageAffectedFixed in
com.xuxueli:xxl-rpc-core MavenAll versions to 1.7.0None
com.xuxueli:xxl-rpc-core MavenAll versions to 1.7.0None

Products include Xxl-Rpc Project Xxl-Rpc.

How do I fix CVE-2023-33496?

No fix has been published for CVE-2023-33496 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-2023-33496 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33496 exists.

Sources

Also known as GHSA-c29g-q3h3-mwcf.

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