Bug 1124964 (CVE-2014-5117)

Summary:	CVE-2014-5117 tor: potential for traffic-confirmation attacks
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	carnil, jrusnack, lmacken, pwouters, s
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tor 0.2.4.23	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-08-18 15:42:42 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:	1124965, 1124966
Bug Blocks:

Description Vincent Danen 2014-07-30 18:16:50 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2014-5117 to
the following vulnerability:

Name: CVE-2014-5117
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5117
Assigned: 20140730
Reference: https://lists.torproject.org/pipermail/tor-announce/2014-July/000093.html
Reference: https://lists.torproject.org/pipermail/tor-announce/2014-July/000094.html
Reference: https://lists.torproject.org/pipermail/tor-talk/2014-July/034180.html
Reference: https://blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attack
Reference: https://trac.torproject.org/projects/tor/ticket/1038

Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit
after an inbound RELAY_EARLY cell is received by a client, which makes
it easier for remote attackers to conduct traffic-confirmation attacks
by using the pattern of RELAY and RELAY_EARLY cells as a means of
communicating information about hidden service names.

Comment 1 Vincent Danen 2014-07-30 18:17:36 UTC

Created tor tracking bugs for this issue:

Affects: fedora-all [bug 1124965]
Affects: epel-all [bug 1124966]

Comment 2 Fedora Update System 2014-08-15 02:35:20 UTC

tor-0.2.4.23-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2014-08-15 02:57:13 UTC

tor-0.2.4.23-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.