#VU34914 Off-by-one in OpenLDAP and Debian Linux - CVE-2014-8182

Vulnerability identifier: #VU34914

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-8182

CWE-ID: CWE-193

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenLDAP
Server applications / Directory software, identity management
Debian Linux
Operating systems & Components / Operating system

Vendor: OpenLDAP.org
Debian

Description

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

An off-by-one error leading to a crash was discovered in openldap 2.4 when processing DNS SRV messages. If slapd was configured to use the dnssrv backend, an attacker could crash the service with crafted DNS responses.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenLDAP: 2.4

Debian Linux: 2.4 - 10.0

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External links
https://access.redhat.com/security/cve/cve-2014-8182
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-8182
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2014-8182
https://security-tracker.debian.org/tracker/CVE-2014-8182

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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.