CVE-2022-21689: high-severity vulnerability in onionshare
Denial of Service in Onionshare
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
onionshare · onionshareRelated CVEs — onionshare
In the same product, most dangerous first.
CVE-2022-21694LOWOTF-006: Broken Website Hardening Control: The CSP can be turned on or off but not configured for the specific needs of the websiteEPSS 1.3%CVE-2022-21693MEDIUMPath traversal in OnionshareEPSS 1.2%CVE-2022-21688HIGHOut-of-bounds Read in OnionshareEPSS 0.9%CVE-2022-21695MEDIUMImproper Access Control in OnionshareEPSS 0.9%CVE-2022-21690HIGHCross-Site Scripting in OnionshareEPSS 0.8%CVE-2022-21692MEDIUMImproper Access Control in OnionshareEPSS 0.8%