CVE-2022-21689

Denial of Service in Onionshare

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: onionshare onionshare
Published at:
Updated at:

References

Link Tags
https://github.com/onionshare/onionshare/releases/tag/v2.5 third party advisory release notes
https://github.com/onionshare/onionshare/security/advisories/GHSA-jh82-c5jw-pxpc third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-21689?
CVE-2022-21689 has been scored as a high severity vulnerability.
How to fix CVE-2022-21689?
To fix CVE-2022-21689, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-21689 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-21689 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-21689?
CVE-2022-21689 affects onionshare onionshare.
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