Deserialization of Untrusted Data Affecting org.apache.sshd:sshd-common package, versions [,2.9.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.5% (77th percentile)

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  • Snyk ID SNYK-JAVA-ORGAPACHESSHD-3121053
  • published 16 Nov 2022
  • disclosed 16 Nov 2022
  • credit Zhang Zewei

How to fix?

Upgrade org.apache.sshd:sshd-common to version 2.9.2 or higher.

Overview

Affected versions of this package are vulnerable to Deserialization of Untrusted Data via org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider.

Details

Serialization is a process of converting an object into a sequence of bytes which can be persisted to a disk or database or can be sent through streams. The reverse process of creating object from sequence of bytes is called deserialization. Serialization is commonly used for communication (sharing objects between multiple hosts) and persistence (store the object state in a file or a database). It is an integral part of popular protocols like Remote Method Invocation (RMI), Java Management Extension (JMX), Java Messaging System (JMS), Action Message Format (AMF), Java Server Faces (JSF) ViewState, etc.

Deserialization of untrusted data (CWE-502) is when the application deserializes untrusted data without sufficiently verifying that the resulting data will be valid, thus allowing the attacker to control the state or the flow of the execution.

CVSS Scores

version 3.1
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Snyk

Recommended
7.3 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    Low
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NVD

9.8 critical
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SUSE

9.8 critical
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Red Hat

9.8 critical