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CVE-2014-8182· NVD / CVE Program· CNA redhat

An off-by-one error leading to a crash was discovered in openldap 2.4 when processing DNS SRV messages.

An off-by-one error leading to a crash was discovered in openldap 2.4 when processing DNS SRV messages. If slapd was configured to use the dnssrv backend, an attacker could crash the service with crafted DNS responses.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jan 2, 2020
Updated
Jun 16, 2026
EPSS
3.1% · 87th percentile
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JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.1%

Affected systems

VendorProduct
openldapopenldap
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • debian debian linux8.0
  • debian debian linux9.0
  • openldap openldap2.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • openldap openldap

    • 2.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:6::clientopenldapbefore 0:2.4.40-5.el60:2.4.40-5.el6
Red Hat:enterprise_linux:6::clientopenldap-clientsbefore 0:2.4.40-5.el60:2.4.40-5.el6
Red Hat:enterprise_linux:6::clientopenldap-debuginfobefore 0:2.4.40-5.el60:2.4.40-5.el6
Red Hat:enterprise_linux:6::clientopenldap-develbefore 0:2.4.40-5.el60:2.4.40-5.el6
Red Hat:enterprise_linux:6::clientopenldap-serversbefore 0:2.4.40-5.el60:2.4.40-5.el6
Red Hat:enterprise_linux:6::clientopenldap-servers-sqlbefore 0:2.4.40-5.el60:2.4.40-5.el6
Red Hat:enterprise_linux:7::clientopenldapbefore 0:2.4.40-8.el70:2.4.40-8.el7
Red Hat:enterprise_linux:7::clientopenldap-clientsbefore 0:2.4.40-8.el70:2.4.40-8.el7
Red Hat:enterprise_linux:7::clientopenldap-debuginfobefore 0:2.4.40-8.el70:2.4.40-8.el7
Red Hat:enterprise_linux:7::clientopenldap-develbefore 0:2.4.40-8.el70:2.4.40-8.el7
Red Hat:enterprise_linux:7::clientopenldap-serversbefore 0:2.4.40-8.el70:2.4.40-8.el7
Red Hat:enterprise_linux:7::clientopenldap-servers-sqlbefore 0:2.4.40-8.el70:2.4.40-8.el7

Same product

openldap: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-29155In OpenLDAP 2.x before 2.5.12 and 2.6.x before 2.6.2, a SQL injection vulnerability exists in the experimental back-sql backend to slapd, vi
    58Plan
  • CVE-2020-36228An integer underflow was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Certificate List Exact Assertion processing, r
    55Plan
  • CVE-2020-36221An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, result
    55Plan
  • CVE-2020-36227A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the cancel_extop Cancel operation, resulting in de
    53Plan
  • CVE-2020-36222A flaw was discovered in OpenLDAP before 2.4.57 leading to an assertion failure in slapd in the saslAuthzTo validation, resulting in denial
    53Plan
  • CVE-2006-5779OpenLDAP before 2.3.29 allows remote attackers to cause a denial of service (daemon crash) via LDAP BIND requests with long authcid names, w
    53Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:openldap0:2.4.40-5.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:openldap-clients0:2.4.40-5.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:openldap-debuginfo0:2.4.40-5.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:openldap-devel0:2.4.40-5.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:openldap-servers0:2.4.40-5.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:openldap-servers-sql0:2.4.40-5.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-193 · Off-by-one Error

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records