CVE-2014-8182 Denial of service in openldap

High 7.5 Published 2 Jan 2020 Updated 6 Aug 2024

An attacker can crash the OpenLDAP service by sending crafted DNS responses if the dnssrv backend is enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2014-8182?

CVE-2014-8182 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 2 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-193

Which versions are affected by CVE-2014-8182?

It affects 2 products.

Linux distribution packages (24)

`openldap` Red Hat:enterprise_linux:6::client	All versions	`0:2.4.40-5.el6`
`openldap-clients` Red Hat:enterprise_linux:6::client	All versions	`0:2.4.40-5.el6`
`openldap-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:2.4.40-5.el6`
`openldap-devel` Red Hat:enterprise_linux:6::client	All versions	`0:2.4.40-5.el6`
`openldap-servers` Red Hat:enterprise_linux:6::client	All versions	`0:2.4.40-5.el6`
`openldap-servers-sql` Red Hat:enterprise_linux:6::client	All versions	`0:2.4.40-5.el6`
`openldap` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.4.40-5.el6`
`openldap-clients` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.4.40-5.el6`
`openldap-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.4.40-5.el6`
`openldap-devel` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.4.40-5.el6`
`openldap-servers` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.4.40-5.el6`
`openldap-servers-sql` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.4.40-5.el6`
`openldap` Red Hat:enterprise_linux:6::server	All versions	`0:2.4.40-5.el6`
`openldap-clients` Red Hat:enterprise_linux:6::server	All versions	`0:2.4.40-5.el6`
`openldap-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:2.4.40-5.el6`
`openldap-devel` Red Hat:enterprise_linux:6::server	All versions	`0:2.4.40-5.el6`
`openldap-servers` Red Hat:enterprise_linux:6::server	All versions	`0:2.4.40-5.el6`
`openldap-servers-sql` Red Hat:enterprise_linux:6::server	All versions	`0:2.4.40-5.el6`
`openldap` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.4.40-5.el6`
`openldap-clients` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.4.40-5.el6`
`openldap-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.4.40-5.el6`
`openldap-devel` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.4.40-5.el6`
`openldap-servers` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.4.40-5.el6`
`openldap-servers-sql` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.4.40-5.el6`

Products include Debian Debian Linux, Openldap Openldap.

How do I fix CVE-2014-8182?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2014-8182 being exploited?

There is no known exploitation of CVE-2014-8182 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as GHSA-mr56-3w7m-88hw, RHBA-2015:1292.