Bug 1899675 (CVE-2020-25709)

Summary:	CVE-2020-25709 openldap: assertion failure in Certificate List syntax validation
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aboyko, asoldano, atangrin, bbaranow, bmaxwell, brian.stansberry, cbuissar, cdewolf, chazlett, csutherl, darran.lofthouse, dkreling, dosoudil, eleandro, gzaronik, iweiss, jawilson, jclere, jochrist, jperkins, jwon, krathod, kwills, ldap-maint, lgao, lnykryn, matushonek, mbabacek, msalle, msauton, msochure, msvehla, mturk, myarboro, nwallace, pjindal, pmackay, rguimara, rmeggins, rstancel, rsvoboda, security-response-team, sinan.polat, smaestri, spichugi, tcrider, tcullum, tom.jenkinson, vashirov, weli
Target Milestone:	---	Keywords:	Reopened, Security
Target Release:	---
Hardware:	All
OS:	Linux
See Also:	https://issues.redhat.com/browse/CRW-1389 https://issues.redhat.com/browse/JBCS-1041
Whiteboard:
Fixed In Version:	openldap 2.4.56	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-01-15 01:30:46 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:	1900139, 2040539
Bug Blocks:	1899680, 1939986

Description Guilherme de Almeida Suckevicz 2020-11-19 18:52:14 UTC

A malicious packet can force OpenLDAP to fail an assertion in certificateListValidate function in servers/slapd/schema_init.c.

Reference:
https://bugs.openldap.org/show_bug.cgi?id=9383

Upstream patch:
https://git.openldap.org/openldap/openldap/-/commit/67670f4544e28fb09eb7319c39f404e1d3229e65

Comment 3 Todd Cullum 2020-11-23 20:26:08 UTC

External References:

https://git.openldap.org/openldap/openldap/-/commit/ab3915154e69920d480205b4bf5ccb2b391a0a1f#a2feb6ed0257c21c6672793ee2f94eaadc10c72c

Comment 8 Todd Cullum 2020-12-02 17:55:12 UTC

Statement:

This flaw does not affect Red Hat Enterprise Linux 8 because the slapd server is not shipped in the Red Hat Enterprise Linux 8 repositories.

Comment 15 Product Security DevOps Team 2021-07-02 04:40:24 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-25709

Comment 17 Product Security DevOps Team 2022-01-14 01:00:40 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-25709

Comment 19 Product Security DevOps Team 2022-01-15 01:30:43 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-25709

Comment 24 errata-xmlrpc 2022-02-22 16:59:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2022:0621 https://access.redhat.com/errata/RHSA-2022:0621