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CVE-2022-2576

Good to know:

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Date: July 29, 2022

In Eclipse Californium version 2.0.0 to 2.7.2 and 3.0.0-3.5.0 a DTLS resumption handshake falls back to a DTLS full handshake on a parameter mismatch without using a HelloVerifyRequest. Especially, if used with certificate based cipher suites, that results in message amplification (DDoS other peers) and high CPU load (DoS own peer). The misbehavior occurs only with DTLS_VERIFY_PEERS_ON_RESUMPTION_THRESHOLD values larger than 0.

Language: Java

Severity Score

Related Resources (7)

https://github.com/eclipse/californium
https://github.com/eclipse-californium/californium/pull/2039
https://github.com/eclipse-californium/californium/commit/0cc953a1dc071efc960130e229fcb4f8bda7f9df
https://nvd.nist.gov/vuln/detail/CVE-2022-2576
https://bugs.eclipse.org/580018
https://github.com/eclipse-californium/californium/commit/8373db84b2d07f22c39ffc333ab881dba9401722
https://www.mend.io/vulnerability-database/CVE-2022-2576

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

Incorrect Behavior Order: Early Amplification

CWE-408

Top Fix

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Upgrade Version

Upgrade to version org.eclipse.californium:californium-core:2.7.3;org.eclipse.californium:californium-core:3.6.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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