CVE-2022-45047 Apache MINA SSHD: Java unsafe deserialization vulnerability

Q: Which versions are affected by CVE-2022-45047?

4 open source packages ship an affected version, including org.apache.sshd:sshd-common and org.apache.sshd:sshd-core. It affects 1 product.

Q: Is CVE-2022-45047 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-45047 exists.

Q: How do I fix CVE-2022-45047?

Upgrade org.apache.sshd:sshd-common to 2.9.2 or later.

Critical 9.8 Published 16 Nov 2022 Updated 1 May 2026

An attacker can execute arbitrary code if a developer uses the SimpleGeneratorHostKeyProvider class to load host keys via Java deserialization.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-45047?

CVE-2022-45047 is a critical unsafe deserialization vulnerability in Apache MINA SSHD, published on 16 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Class org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider in Apache MINA SSHD <= 2.9.1 uses Java deserialization to load a serialized java.security.PrivateKey. The class is one of several implementations that an implementor using Apache MINA SSHD can choose for loading the host keys of an SSH server.

Weakness: CWE-502

Which versions are affected by CVE-2022-45047?

4 open source packages ship an affected version, including org.apache.sshd:sshd-common and org.apache.sshd:sshd-core. It affects 1 product.

Package	Affected	Fixed in
`org.apache.sshd:sshd-common` Maven	All versions	`2.9.2`
`org.apache.sshd:sshd-common` Maven	All versions	`2.9.2`
`org.apache.sshd:sshd-core` Maven	All versions	`2.9.2`
`org.apache.sshd:sshd-core` Maven	All versions	`2.9.2`

Linux distribution packages (1)

apache-sshd openSUSE:Tumbleweed All versions 2.9.2-1.1

Products include Apache Sshd.

How do I fix CVE-2022-45047?

Upgrade org.apache.sshd:sshd-common to 2.9.2 or later.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2022-45047 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-45047 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-fhw8-8j55-vwgq, MINI-c6p5-qw5r-fm4x, OESA-2022-2119, openSUSE-SU-2024:12511-1.