Information Exposure Affecting net.i2p:router package, versions [,2.3.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.05% (17th percentile)

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  • Snyk ID SNYK-JAVA-NETI2P-8185041
  • published 14 Oct 2024
  • disclosed 9 Oct 2024
  • credit hbapm6

How to fix?

Upgrade net.i2p:router to version 2.3.0 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure in the form of exposing IPv4 and IPv6 addresses of hidden services via replay attack. An attacker can de-anonymize public IP addresses by sending the messages with the same messageID to a client, which passes the message through a bloom filter, and directly to the router, which drops it due to already having seen the unique ID before. This attack is unreliable due to the length of time it takes to brute force the target router, during which time activity on the router or the network may impact the predictability of its results.

CVSS Scores

version 4.0
version 3.1
Expand this section

Snyk

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