Bug 1921377 (CVE-2020-36221) - CVE-2020-36221 openldap: Integer underflow in serialNumberAndIssuerCheck in schema_init.c
Summary: CVE-2020-36221 openldap: Integer underflow in serialNumberAndIssuerCheck in s...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-36221
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1921378
Blocks: 1921410
TreeView+ depends on / blocked
 
Reported: 2021-01-27 23:05 UTC by Pedro Sampaio
Modified: 2025-08-08 11:29 UTC (History)
7 users (show)

Fixed In Version: openldap 2.4.57
Clone Of:
Environment:
Last Closed: 2021-03-02 13:01:49 UTC
Embargoed:

Attachments (Terms of Use)

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
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