CVE-2022-21696: Username spoofing in OnionShare

CVE-2022-21696 · Severity: low · CVSS 3.1 · Published 2022-01-18

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 it is possible to change the username to that of another chat participant with an additional space character at the end of the name string. An adversary with access to the chat environment can use the rename feature to impersonate other participants by adding whitespace characters at the end of the username.

Technologies: onionshare-cli (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2022-21696 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2022-21696 being exploited in the wild.
How severe is CVE-2022-21696?
Low severity, with a CVSS score of 3.1, published 18 January 2022.
Which products and versions are affected?
onionshare-cli (PyPI) ECOSYSTEM:introduced=0,fixed=2.5, ECOSYSTEM:introduced=2.3,fixed=2.5.
Is there a fix for CVE-2022-21696?
Yes. onionshare-cli (PyPI): upgrade to 2.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2022-21696?
Check whether you run onionshare-cli (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • onionshare-cli (PyPI): upgrade to 2.5 or later
    pip install "onionshare-cli>=2.5"

Affected products

  • onionshare-cli (PyPI) ECOSYSTEM:introduced=0,fixed=2.5, ECOSYSTEM:introduced=2.3,fixed=2.5

Identifiers

  • CVE-2022-21696
  • GHSA-68vr-8f46-vc9f
  • PYSEC-2022-47

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