Bug 1321866 – CVE-2016-3075 glibc: Stack overflow in nss_dns_getnetbyname_r

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Bug 1321866 - (CVE-2016-3075) CVE-2016-3075 glibc: Stack overflow in nss_dns_getnetbyname_r

Summary:	CVE-2016-3075 glibc: Stack overflow in nss_dns_getnetbyname_r

Status:	NEW

Aliases:	CVE-2016-3075

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

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

URL:
Whiteboard:	impact=low,public=20160329,reported=2...
Keywords:	Security

Depends On:	1321954 1321993
Blocks:	1321867 1323912
	Show dependency tree / graph

Reported:	2016-03-29 05:47 EDT by Adam Mariš
Modified:	2017-03-09 19:49 EST (History)
CC List:	16 users (show)

See Also:
Fixed In Version:	glibc 2.24
Doc Type:	Bug Fix
Doc Text:	A stack overflow vulnerability was found in _nss_dns_getnetbyname_r. On systems with nsswitch configured to include "networks: dns" with a privileged or network-facing service that would attempt to resolve user-provided network names, an attacker could provide an excessively long network name, resulting in stack corruption and code execution.
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Attachments	(Terms of Use)
Crash report (1.76 KB, text/plain) 2016-03-29 05:49 EDT, Adam Mariš	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Sourceware	19879	None	None	None	2016-03-29 06:54 EDT
Red Hat Product Errata	RHSA-2016:2573	normal	SHIPPED_LIVE	Low: glibc security, bug fix, and enhancement update	2016-11-03 08:05:56 EDT

Groups: None (edit)

Description Adam Mariš 2016-03-29 05:47:04 EDT

A stack overflow vulnerability (unbounded allocation) in _nss_dns_getnetbyname_r function was found.

Comment 1 Adam Mariš 2016-03-29 05:47:12 EDT

Acknowledgments:

Name: Florian Weimer (Red Hat)

Comment 2 Adam Mariš 2016-03-29 05:49 EDT

Created attachment 1141161 [details]
Crash report

Comment 4 Florian Weimer 2016-03-29 07:03:13 EDT

Upstream bug: https://sourceware.org/bugzilla/show_bug.cgi?id=19879

Proposed patch: https://sourceware.org/ml/libc-alpha/2016-03/msg00692.html

Comment 5 Adam Mariš 2016-03-29 09:03:37 EDT

Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1321954]

Comment 10 errata-xmlrpc 2016-11-03 04:31:23 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2573 https://rhn.redhat.com/errata/RHSA-2016-2573.html

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