Is CVE-2020-36227 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 77%.

What products does CVE-2020-36227 affect?

Tracked products affected include Debian, macOS, OpenLDAP. Check the version you run to see whether it is affected.

How do I fix CVE-2020-36227?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

← All products

CVE-2020-36227

Q: What is CVE-2020-36227?

CVE-2020-36227 is a high-severity software vulnerability (CWE-835) with a CVSS score of 7.5. A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the cancel_extop Cancel operation, resulting in denial of service.

HIGH severity · CVSS 7.5 · CWE-835

7.5CVSS HIGH

Summary

A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the cancel_extop Cancel operation, resulting in denial of service.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)77%

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

Affected products we track (3)

Debian macOS OpenLDAP

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.openldap.org/openldap/openldap/-/commit/9d0e8485f3113505743baabf1167e01e4558ccf5 ↗

Additional information

NVD record
https://git.openldap.org/openldap/openldap/-/commit/9d0e8485f3113505743baabf1167e01e4558ccf5Patch
https://bugs.openldap.org/show_bug.cgi?id=9428Advisory
https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57Advisory
http://seclists.org/fulldisclosure/2021/May/64Advisory
http://seclists.org/fulldisclosure/2021/May/65Advisory
http://seclists.org/fulldisclosure/2021/May/70Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E