Cyber Resilience

CVE-2021-27212

HighPublic PoC

Published: 14 February 2021

Published
14 February 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.2511 96.3th percentile
Risk Priority 30 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-27212 is a high-severity Reachable Assertion (CWE-617) vulnerability in Openldap Openldap. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 3.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

and checkTime.

CWE(s)
CWE-617

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

openldap
openldap
2.5.0, 2.5.1 · ≤ 2.4.57
debian
debian linux
10.0, 9.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References