Denial of service in OpenLDAP



Published: 2023-06-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-2953
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		OpenLDAP
Server applications / Directory software, identity management

Vendor OpenLDAP.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU77252

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2023-2953

CWE-ID:

Exploit availability:

Description

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

The vulnerability exists due to a NULL pointer dereference error within the ber_memalloc_x() function. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenLDAP: 2.3.4 - 2.5.13

Fixed software versions

CPE2.3 External links

http://bugs.openldap.org/show_bug.cgi?id=9904
http://access.redhat.com/security/cve/CVE-2023-2953


Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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