Bug 1418611 – CVE-2016-10196 libevent: Stack-buffer overflow in evutil_parse_sockaddr_port()

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Bug 1418611 - (CVE-2016-10196) CVE-2016-10196 libevent: Stack-buffer overflow in evutil_parse_sockaddr_port()

Summary:	CVE-2016-10196 libevent: Stack-buffer overflow in evutil_parse_sockaddr_port()

Status:	CLOSED WONTFIX

Aliases:	CVE-2016-10196

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160127,repor...
Keywords:	Security

Depends On:	1418616
Blocks:	1418615
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Reported:	2017-02-02 05:33 EST by Andrej Nemec
Modified:	2017-05-08 02:46 EDT (History)
CC List:	8 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in libevent with the parsing of IPv6 addresses. If an attacker could cause an application using libevent to parse a malformed address in IPv6 notation of more than 2GiB in length, a stack overflow would occur leading to a crash.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-03-24 00:59:34 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:1201	normal	SHIPPED_LIVE	Important: thunderbird security update	2017-05-08 06:45:45 EDT

Groups: None (edit)

Description Andrej Nemec 2017-02-02 05:33:59 EST

A vulnerability was found in libevent. There is a stack-buffer overflow in evutil.c.

Upstream bug:

https://github.com/libevent/libevent/issues/318

Upstream patch:

https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5

Comment 1 Andrej Nemec 2017-02-02 05:41:23 EST

Created libevent tracking bugs for this issue:

Affects: fedora-all [bug 1418616]

Comment 3 Doran Moppert 2017-02-10 00:48:09 EST

nfs-utils since rhel-5 does not use embedded libevent

Comment 4 Doran Moppert 2017-02-20 22:01:24 EST

libevent.1.4 does not include support for IPv6.

openmpi does not use or expose any functions in libevent which expose this vulnerability.

Stack canaries prevent exploitation of this flaw for arbitrary code execution, limiting the potential impact to only a crash.

Comment 5 errata-xmlrpc 2017-05-08 02:46:17 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:1201 https://access.redhat.com/errata/RHSA-2017:1201

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