Bug 1921377 (CVE-2020-36221)

Summary:	CVE-2020-36221 openldap: Integer underflow in serialNumberAndIssuerCheck in schema_init.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	kaycoth, lance, ldap-maint, matushonek, rmeggins, spichugi, vashirov
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	openldap 2.4.57	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-03-02 13:01:49 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:	1921378
Bug Blocks:	1921410

Description Pedro Sampaio 2021-01-27 23:05:41 UTC

An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).

https://bugs.openldap.org/show_bug.cgi?id=9404
https://bugs.openldap.org/show_bug.cgi?id=9424
https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31
https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842
https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57

Comment 1 Pedro Sampaio 2021-01-27 23:06:13 UTC

Created openldap tracking bugs for this issue:

Affects: fedora-all [bug 1921378]

Comment 4 Todd Cullum 2021-02-02 23:10:19 UTC

Statement:

This flaw does not affect openldap as shipped with Red Hat Enterprise Linux 8 because the slapd server is not shipped. While Red Hat Enterprise Linux 7 does ship the slapd server, this flaw is out of support scope for Red Hat Enterprise Linux 7 and earlier. For more information on support scope, see https://access.redhat.com/support/policy/updates/errata/ .

Comment 5 Product Security DevOps Team 2021-03-02 13:01:49 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-2020-36221