CVE-2021-27212

Public Exploit

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 16.83% Top 10%
Vendor Advisory debian.org Vendor Advisory openldap.org Vendor Advisory openldap.org Vendor Advisory openldap.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugs.openldap.org/show_bug.cgi?id=9454 issue tracking exploit vendor advisory
https://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0 patch vendor advisory
https://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30 patch vendor advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00035.html third party advisory mailing list
https://www.debian.org/security/2021/dsa-4860 third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20210319-0005/ third party advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2021-27212?
CVE-2021-27212 has been scored as a high severity vulnerability.
How to fix CVE-2021-27212?
To fix CVE-2021-27212, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27212 being actively exploited in the wild?
It is possible that CVE-2021-27212 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~17% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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