CVE-2020-36227
HIGH
7.5
CVSS Score
Published: January 25, 2021 at 09:43 AM UTC
Updated: October 14, 2026 at 10:17 AM UTC
3 products affected across 3 vendorsmacOSDebian LinuxOpenLDAP
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Severity
HIGH7.5
Exploit prediction
EPSS 77%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
11.1 ≤ v < 11.4
Affected range stops below 11.4, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%v < 2.4.57
Affected range stops below 2.4.57, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (15)
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/May/64Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/May/65Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/May/70x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://bugs.openldap.org/show_bug.cgi?id=9428x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.openldap.org/openldap/openldap/-/commit/9d0e8485f3113505743baabf1167e01e4558ccf5x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3EMailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3ECVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-835
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