Vulnerability identifier: #VU33292

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-1546

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenLDAP
Server applications / Directory software, identity management

Vendor: OpenLDAP.org

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (crash) via a crafted search query with a matched values control.

Mitigation
Update to version 2.4.41.

Vulnerable software versions

OpenLDAP: 2.4.40

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External links
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
http://lists.opensuse.org/opensuse-updates/2015-07/msg00069.html
http://secunia.com/advisories/62787
http://www.mandriva.com/security/advisories?name=MDVSA-2015:073
http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=2f1a2dd329b91afe561cd06b872d09630d4edb6a
http://www.openldap.org/its/?findid=8046
http://www.openwall.com/lists/oss-security/2015/02/07/3
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776991
http://exchange.xforce.ibmcloud.com/vulnerabilities/100938
http://support.apple.com/HT204659

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Q & A

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.