Bug 1614041

Summary:	CVE-2018-5740 bind99: bind: processing of certain records when "deny-answer-aliases" is in use may trigger an assert leading to a denial of service [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Scott Gayou <sgayou>
Component:	bind99	Assignee:	Petr Menšík <pemensik>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	28	CC:	jpopelka, mruprich, msehnout, pemensik, pzhukov, thozza
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Release Note
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-08-13 13:30:00 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:
Bug Blocks:	1613595

Description Scott Gayou 2018-08-08 21:33:06 UTC

This is an automatically created tracking bug!  It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.

For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.

For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs

When submitting as an update, use the fedpkg template provided in the next
comment(s).  This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.

Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.

NOTE: this issue affects multiple supported versions of Fedora. While only
one tracking bug has been filed, please correct all affected versions at
the same time.  If you need to fix the versions independent of each other,
you may clone this bug as appropriate.

Comment 1 Scott Gayou 2018-08-08 21:33:11 UTC

Use the following template to for the 'fedpkg update' request to submit an
update for this issue as it contains the top-level parent bug(s) as well as
this tracking bug.  This will ensure that all associated bugs get updated
when new packages are pushed to stable.

=====

# bugfix, security, enhancement, newpackage (required)
type=security

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=1613595,1614041

# Description of your update
notes=Security fix for [PUT CVEs HERE]

# Enable request automation based on the stable/unstable karma thresholds
autokarma=True
stable_karma=3
unstable_karma=-3

# Automatically close bugs when this marked as stable
close_bugs=True

# Suggest that users restart after update
suggest_reboot=False

======

Additionally, you may opt to use the bodhi web interface to submit updates:

https://bodhi.fedoraproject.org/updates/new

Comment 2 Petr Menšík 2018-08-13 13:30:00 UTC

Bind99 compiles only client library without server part. Even when affected code happens in lib/dns/resolver.c, it this bug requires option "deny-asnwer-aliases" to be used. It is enabled not by default and it is not possible to enable it with only partial build distributed by this package.

This package was obsoleted in Fedora 28, only Fedora 27 remains to have it. I am choosing to close it as Not a bug. The only way to have vulnerable code would be the use of these sources compiled with changed build. That is unsupported, please use bind package instead.