Vulnerability identifier: #VU45182
Vulnerability risk: Medium
CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-399
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
OpenLDAP
Server applications /
Directory software, identity management
Vendor: OpenLDAP.org
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
modrdn.c in slapd in OpenLDAP 2.4.x before 2.4.24 allows remote attackers to cause a denial of service (daemon crash) via a relative Distinguished Name (DN) modification request (aka MODRDN operation) that contains an empty value for the OldDN field.
Mitigation
Install update from vendor's website.
Vulnerable software versions
OpenLDAP: 2.4.6 - 2.4.23
External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://openwall.com/lists/oss-security/2011/02/28/1
http://openwall.com/lists/oss-security/2011/02/28/2
http://openwall.com/lists/oss-security/2011/03/01/11
http://openwall.com/lists/oss-security/2011/03/01/15
http://secunia.com/advisories/43331
http://secunia.com/advisories/43718
http://security.gentoo.org/glsa/glsa-201406-36.xml
http://securitytracker.com/id?1025191
http://www.mandriva.com/security/advisories?name=MDVSA-2011:055
http://www.mandriva.com/security/advisories?name=MDVSA-2011:056
http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/modrdn.c.diff?r1=1.170.2.8&r2=1.170.2.9
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6768
http://www.openldap.org/lists/openldap-announce/201102/msg00000.html
http://www.redhat.com/support/errata/RHSA-2011-0347.html
http://www.ubuntu.com/usn/USN-1100-1
http://www.vupen.com/english/advisories/2011/0665
http://bugzilla.novell.com/show_bug.cgi?id=674985
http://bugzilla.redhat.com/show_bug.cgi?id=680975
http://exchange.xforce.ibmcloud.com/vulnerabilities/66239
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.