Bug 1829199 (CVE-2020-10593)

Summary:	CVE-2020-10593 tor: there's a memory leak allowing remote attackers to cause a DoS
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	lewk, mh, pwouters, rh-bugzilla, s
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tor 0.3.5.10, tor 0.4.1.9, tor 0.4.2.7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-29 11:48:34 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:	1829200
Bug Blocks:

Description Marian Rehak 2020-04-29 08:15:14 UTC

Tor allows remote attackers to cause a Denial of Service (memory leak), aka TROVE-2020-004. This occurs in circpad_setup_machine_on_circ because a circuit-padding machine can be negotiated twice on the same circuit.

Upstream Issue:

https://trac.torproject.org/projects/tor/ticket/33619

Comment 1 Marian Rehak 2020-04-29 08:15:36 UTC

Created tor tracking bugs for this issue:

Affects: epel-all [bug 1829200]

Comment 2 Marcel Haerry 2020-04-29 11:48:34 UTC

all our releases already include fixes for that CVE