Bug 1559802 (CVE-2018-1089)

Summary:	CVE-2018-1089 389-ds-base: ns-slapd crash via large filter value in ldapsearch
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	cbuissar, lkrispen, mreynolds, nkinder, rmeggins, security-response-team, tbordaz, vashirov
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	389-ds-base 1.4.0.9, 389-ds-base 1.3.8.1, 389-ds-base 1.3.6.15	Doc Type:	If docs needed, set a value
Doc Text:	It was found that 389-ds-base did not properly handle long search filters with characters needing escapes, possibly leading to buffer overflows. A remote, unauthenticated attacker could potentially use this flaw to make ns-slapd crash via a specially crafted LDAP request, thus resulting in denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-10-18 18:07:12 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:	1559818, 1559819, 1562151, 1562152, 1575671, 1575672
Bug Blocks:	1559605

Description Adam Mariš 2018-03-23 10:05:11 UTC

It is possible to crash ns-slapd (and ipa-dnskeysyncd afterwards) with crafted ldapsearch query with very long filter value both as anonymous or authenticated user. The crash can be similarly triggered with a query via the FreeIPA API as an authenticated user.

Comment 1 Adam Mariš 2018-03-23 10:05:16 UTC

Acknowledgments:

Name: Greg Kubok

Comment 23 Cedric Buissart 2018-05-07 15:06:45 UTC

Created 389-ds-base tracking bugs for this issue:

Affects: fedora-all [bug 1575671]

Comment 25 errata-xmlrpc 2018-05-09 14:27:29 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:1364 https://access.redhat.com/errata/RHSA-2018:1364

Comment 26 errata-xmlrpc 2018-05-14 16:09:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1380 https://access.redhat.com/errata/RHSA-2018:1380

Comment 27 Cedric Buissart 2018-06-05 13:12:01 UTC

Upstream fix: 
https://pagure.io/389-ds-base/c/9d8d096b154e