Vulnerability 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. Affected versions of the desktop application were found to be vulnerable to denial of service via an undisclosed vulnerability in the QT image parsing. Roughly 20 bytes lead to 2GB memory consumption and this can be triggered multiple times. To be abused, this vulnerability requires rendering in the history tab, so some user interaction is required. An adversary with knowledge of the Onion service address in public mode or with authentication in private mode can perform a Denial of Service attack, which quickly results in out-of-memory for the server. This requires the desktop application with rendered history, therefore the impact is only elevated. This issue has been patched in version 2.5.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Onionshare | Onionshare | < 2.5 |
Related Weaknesses (CWE)
References
- https://github.com/onionshare/onionshare/releases/tag/v2.5Release NotesThird Party Advisory
- https://github.com/onionshare/onionshare/security/advisories/GHSA-x7wr-283h-5h2vThird Party Advisory
- https://github.com/onionshare/onionshare/releases/tag/v2.5Release NotesThird Party Advisory
- https://github.com/onionshare/onionshare/security/advisories/GHSA-x7wr-283h-5h2vThird Party Advisory
FAQ
What is CVE-2022-21688?
CVE-2022-21688 is a vulnerability with a CVSS score of 7.5 (HIGH). OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Affected versions of the desktop application were foun...
How severe is CVE-2022-21688?
CVE-2022-21688 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-21688?
Check the references section above for vendor advisories and patch information. Affected products include: Onionshare Onionshare.