CVE-2013-4449

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-02-05 · updated 2026-06-16
Weakness: CWE-189

Description

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

Debian Linux: 7.0, 8.0
openldap: through 2.4.36; 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.4.10, 2.4.11 (+24)

References

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

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