Bug 1493511 (CVE-2017-0380)

Summary:	CVE-2017-0380 tor: Stack disclosure in hidden services logs when SafeLogging disabled
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	lewk, mh, pwouters, s
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tor 0.2.8.15, tor 0.2.9.12, tor 0.3.0.11, tor 0.3.1.7, tor 0.3.2.1-alpha	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:25:53 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:	1493512, 1493513
Bug Blocks:

Description Andrej Nemec 2017-09-20 11:47:38 UTC

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Upstream patch:

https://github.com/torproject/tor/commit/09ea89764a4d3a907808ed7d4fe42abfe64bd486

Upstream issue:

https://trac.torproject.org/projects/tor/ticket/23490

References:

https://blog.torproject.org/new-tor-stable-releases-02815-02912-03011-fix-onion-service-security-issue

Comment 1 Andrej Nemec 2017-09-20 11:48:07 UTC

Created tor tracking bugs for this issue:

Affects: epel-all [bug 1493513]
Affects: fedora-all [bug 1493512]

Comment 2 Product Security DevOps Team 2019-06-08 03:25:53 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.