Is CVE-2020-12243 in the CISA KEV catalog?

No. CVE-2020-12243 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-12243?

CVE-2020-12243 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-12243?

CVE-2020-12243 has an EPSS score of 4.42% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-12243?

Upgrade openldap on debian 11 to 2.4.50+dfsg-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-12243

HIGHEPSS 90th pctl

7.5

CVSS v3

NVD

Description

In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).

CWE-674

How to fix

Remediation Available

openldapDebian

Fixed in:2.4.50+dfsg-1CVE-2020-12243

openldapUbuntu

Fixed in:2.4.31-1+nmu2ubuntu8.5+esm2USN-4352-2

Fixed in:2.4.42+dfsg-2ubuntu3.8USN-4352-1

Fixed in:2.4.45+dfsg-1ubuntu1.5USN-4352-1

Fixed in:2.4.49+dfsg-2ubuntu1.2USN-4352-1

slapdUbuntu

Fixed in:2.4.31-1+nmu2ubuntu8.5+esm2USN-4352-2

Fixed in:2.4.42+dfsg-2ubuntu3.8USN-4352-1

Fixed in:2.4.45+dfsg-1ubuntu1.5USN-4352-1

Fixed in:2.4.49+dfsg-2ubuntu1.2USN-4352-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

4.42%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Patch3

Vendor Advisory1

git.openldap.org

Third-Party Advisory8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.