Input validation error in OpenLDAP and Debian Linux - CVE-2013-4449

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Main Vulnerability Database Vulnerabilities #VU42072

Input validation error in OpenLDAP and Debian Linux - CVE-2013-4449

Published: February 5, 2014 / Updated: August 10, 2020


Vulnerability identifier: #VU42072
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4449
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

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 software

OpenLDAP
Debian Linux
Amazon Linux AMI
Ubuntu
slapd (Ubuntu package)

How to mitigate CVE-2013-4449

Install update from vendor's website.

slapd (Ubuntu package) - addressed in versions 2.4.28-1.1ubuntu4.5, 2.4.31-1+nmu2ubuntu8.1, 2.4.31-1+nmu2ubuntu11.1, 2.4.31-1+nmu2ubuntu12.1

External References

Related Security Bulletins