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Openldap CVE-2013-4449

MEDIUM
Numeric Errors (CWE-189)
2014-02-05 secalert@redhat.com
Denial Of Service Debian Debian Linux Openldap
4.3
CVSS 2.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
CWE-189
ASVS 5.0
V15 - Secure Coding and Architecture Numeric handling
Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 68.75%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 68.7% exploitation probability (EPSS)

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AnalysisAI

The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Epss exploitation probability 68.7% and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-189. The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a search request, which triggers rwm_conn_destroy to free the session context while it is being used by rwm_op_search. Affected products include: Debian Debian Linux, Openldap.

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
None
Integrity
None
Availability
P

DescriptionCVE.org

The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a search request, which triggers rwm_conn_destroy to free the session context while it is being used by rwm_op_search.

Threat Intelligence Overview

EPSS Score
68.7%
Top 1% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 68.7%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

91
Low Medium High Critical
KEV: 0
EPSS: +69
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.6:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.7:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.8:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.9:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.10:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.11:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.12:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.13:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.14:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.15:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.16:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.17:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.18:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.19:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.20:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.21:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.22:*:*:*:*:*:*:*
+ 13 more

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Same weakness CWE-189 – Numeric Errors

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References

Advisories & patches
REF http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 REF http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735 REF http://rhn.redhat.com/errata/RHSA-2014-0126.html REF http://rhn.redhat.com/errata/RHSA-2014-0206.html REF http://seclists.org/fulldisclosure/2019/Dec/26 REF http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-4449 REF http://www.debian.org/security/2015/dsa-3209 REF http://www.mandriva.com/security/advisories?name=MDVSA-2014:026 REF http://www.openldap.org/its/index.cgi/Incoming?id=7723 REF http://www.openwall.com/lists/oss-security/2013/10/19/3 REF http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html REF http://www.securityfocus.com/bid/63190 REF http://www.securitytracker.com/id/1029711 REF https://bugzilla.redhat.com/show_bug.cgi?id=1019490 REF https://seclists.org/bugtraq/2019/Dec/23 REF https://support.apple.com/kb/HT210788

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