CVE-2022-21689
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 2.5-1 |
| debian | bullseye | fixed | 2.2-3+deb11u1 |
| debian | sid | fixed | 2.5-1 |
| debian | trixie | fixed | 2.5-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | onionshare-cli | <2.5 | 2.5 |
References
- https://github.com/onionshare/onionshare/security/advisories/GHSA-jh82-c5jw-pxpc
- https://nvd.nist.gov/vuln/detail/CVE-2022-21689
- https://github.com/onionshare/onionshare
- https://github.com/onionshare/onionshare/releases/tag/v2.5
- https://github.com/pypa/advisory-database/tree/main/vulns/onionshare-cli/PYSEC-2022-40.yaml
- https://security-tracker.debian.org/tracker/CVE-2022-21689
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.