Bug 2048993 (CVE-2022-21689)

Summary:	CVE-2022-21689 onionshare: possibility to block file upload for other users
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	mail, pj.pandit
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-02-01 10:31:11 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2048994
Bug Blocks:

Description Marian Rehak 2022-02-01 10:03:02 UTC

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.

Reference:

https://github.com/onionshare/onionshare/security/advisories/GHSA-jh82-c5jw-pxpc
https://github.com/onionshare/onionshare/releases/tag/v2.5

Comment 1 Marian Rehak 2022-02-01 10:03:17 UTC

Created onionshare tracking bugs for this issue:

Affects: fedora-all [bug 2048994]

Comment 2 Product Security DevOps Team 2022-02-01 10:31:09 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.