CVE-2014-8182Network attack vector

Service crash via undersized DNS SRV buffer

Published Jan 2, 2020 · Updated Aug 6, 2024

Off-by-one error in Red Hat-patched OpenLDAP allows remote attackers to crash slapd via crafted DNS SRV responses. ldap_domain2hostlist underallocates its host-list buffer for five-digit ports, and repeated writes corrupt allocator metadata. Reachability requires the Red Hat-carried patch, DNS SRV processing, and multiple records with five-digit ports; no vanilla OpenLDAP release was affected.

CVSS severity7.5
High
EPSS probability3.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Off-by-one error in Red Hat-patched OpenLDAP allows remote attackers to crash slapd via crafted DNS SRV responses. ldap_domain2hostlist underallocates its host-list buffer for five-digit ports, and repeated writes corrupt allocator metadata. Reachability requires the Red Hat-carried patch, DNS SRV processing, and multiple records with five-digit ports; no vanilla OpenLDAP release was affected.

The record

CVE
CVE-2014-8182
Published
Jan 2, 2020
Updated
Aug 6, 2024
Vendor
OpenLDAP Foundation
Product
OpenLDAP Software
Classifications
CWE-193, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenLDAP Foundation · OpenLDAP Softwareversion=2.4

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-193Off-by-one Error
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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