CVE Vulnerabilities

CVE-2022-21689

Published: Jan 18, 2022 | Modified: Jul 24, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions the receive mode limits concurrent uploads to 100 per second and blocks other uploads in the same second, which can be triggered by a simple script. An adversary with access to the receive mode can block file upload for others. There is no way to block this attack in public mode due to the anonymity properties of the tor network.

Affected Software

Name Vendor Start Version End Version
Onionshare Onionshare * 2.5 (excluding)
Onionshare Ubuntu bionic *
Onionshare Ubuntu impish *
Onionshare Ubuntu lunar *
Onionshare Ubuntu trusty *
Onionshare Ubuntu xenial *

References