Bug 1921389 (CVE-2020-36226) - CVE-2020-36226 openldap: Denial of service via length miscalculation in slap_parse_user
Summary: CVE-2020-36226 openldap: Denial of service via length miscalculation in slap_...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-36226
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: 1921391
Blocks: 1921410
TreeView+ depends on / blocked
 
Reported: 2021-01-27 23:17 UTC by Pedro Sampaio
Modified: 2021-09-23 08:23 UTC (History)
7 users (show)

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

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Description Pedro Sampaio 2021-01-27 23:17:49 UTC 
A flaw was discovered in OpenLDAP before 2.4.57 leading to a memch->bv_len miscalculation and slapd crash in the saslAuthzTo processing, resulting in denial of service.

https://bugs.openldap.org/show_bug.cgi?id=9413
https://git.openldap.org/openldap/openldap/-/commit/554dff1927176579d652f2fe60c90e9abbad4c65
https://git.openldap.org/openldap/openldap/-/commit/5a2017d4e61a6ddc4dcb4415028e0d08eb6bca26
https://git.openldap.org/openldap/openldap/-/commit/c0b61a9486508e5202aa2e0cfb68c9813731b439
https://git.openldap.org/openldap/openldap/-/commit/d169e7958a3e0dc70f59c8374bf8a59833b7bdd8
https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57
Comment 1 Pedro Sampaio 2021-01-27 23:18:22 UTC 
Created openldap tracking bugs for this issue:

Affects: fedora-all [bug 1921391]
Comment 3 Todd Cullum 2021-02-02 23:49:04 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 4 Product Security DevOps Team 2021-03-02 13:02:13 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-2020-36226
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