Allocation of Resources Without Limits or Throttling Affecting dnsjava:dnsjava package, versions [,3.6.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.05% (19th percentile)

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  • Snyk ID SNYK-JAVA-DNSJAVA-7547405
  • published 23 Jul 2024
  • disclosed 5 Feb 2024
  • credit Elias Heftrig, Haya Schulmann, Niklas Vogel, Michael Waidner

How to fix?

Upgrade dnsjava:dnsjava to version 3.6.0 or higher.

Overview

Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling when DNSSEC validation is enabled, due to a flaw in the DNSSEC specification. An attacker can flood a resolver with NSEC3 closest encloser proof queries to consume excessive resources and deny service to other users (keytrap).

CVSS Scores

version 4.0
version 3.1
Expand this section

Snyk

Recommended
8.7 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Attack Requirements (AT)
    None
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Confidentiality (VC)
    None
  • Integrity (VI)
    None
  • Availability (VA)
    High
  • Confidentiality (SC)
    None
  • Integrity (SI)
    None
  • Availability (SA)
    None