#VU27445 Resource management error


Published: 2020-04-29

Vulnerability identifier: #VU27445

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12243

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

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

Vendor: OpenLDAP.org

Description

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

The vulnerability exists due to resource management error when performing searches with nested boolean expressions in filter.c within the slapd daemon in OpenLDAP. A remote attacker can send a specially crafted LDAP request to the affected server and crash the LDAP service.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenLDAP: 2.4.3 - 2.4.49


CPE

External links
http://bugs.openldap.org/show_bug.cgi?id=9202
http://git.openldap.org/openldap/openldap/-/blob/OPENLDAP_REL_ENG_2_4/CHANGES
http://git.openldap.org/openldap/openldap/-/commit/98464c11df8247d6a11b52e294ba5dd4f0380440


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.


Latest bulletins with this vulnerability