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Resource Exhaustion Affecting openldap package, versions <0:2.4.40-16.36.amzn1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 24.32% (97th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-AMZN201803-OPENLDAP-5496782
  • published 4 May 2023
  • disclosed 14 Feb 2021
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Introduced: 14 Feb 2021

CVE-2021-27212 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 openldap to version 0:2.4.40-16.36.amzn1 or higher.
This issue was patched in ALAS-2023-1741.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openldap package and not the openldap package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.