Bug 1553355 (CVE-2018-0490)

Summary:	CVE-2018-0490 tor: NULL pointer dereference via a misformatted relay descriptor
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	lewk, mh, rh-bugzilla, s
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tor 0.2.9.15, tor 0.3.1.10, tor 0.3.2.10, tor 0.3.3.3-alpha	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 19:57:37 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:	1553356
Bug Blocks:

Description Laura Pardo 2018-03-08 18:07:41 UTC

An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.


References:
https://trac.torproject.org/projects/tor/ticket/25074
https://lists.torproject.org/pipermail/tor-announce/2018-March/000152.html
https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915

Comment 1 Laura Pardo 2018-03-08 18:08:23 UTC

Created tor tracking bugs for this issue:

Affects: epel-6 [bug 1553356]