Information Exposure Affecting libtoxcore package, versions <0.2.2-1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.13% (49th percentile)

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  • Snyk IDSNYK-DEBIAN11-LIBTOXCORE-2316916
  • published14 Dec 2021
  • disclosed13 Dec 2021

Introduced: 13 Dec 2021

CVE-2018-25022  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:11 libtoxcore to version 0.2.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libtoxcore package and not the libtoxcore package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

The Onion module in toxcore before 0.2.2 doesn't restrict which packets can be onion-routed, which allows a remote attacker to discover a target user's IP address (when knowing only their Tox Id) by positioning themselves close to target's Tox Id in the DHT for the target to establish an onion connection with the attacker, guessing the target's DHT public key and creating a DHT node with public key close to it, and finally onion-routing a NAT Ping Request to the target, requesting it to ping the just created DHT node.

CVSS Scores

version 3.1