CVE-2012-0833 Denial of service in n/a

Low 2.3 Published 3 Jul 2012 Updated 6 Aug 2024

Authenticated LDAP users can cause a denial of service via infinite loop in 389 Directory Server when using certificate groups.

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

What is CVE-2012-0833?

CVE-2012-0833 is a low-severity denial of service vulnerability in n/a, published on 3 Jul 2012. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The acllas__handle_group_entry function in servers/plugins/acl/acllas.c in 389 Directory Server before 1.2.10 does not properly handled access control instructions (ACIs) that use certificate groups, which allows remote authenticated LDAP users with a certificate group to cause a denial of service (infinite loop and CPU consumption) by binding to the server.

Weakness: CWE-264

Which versions are affected by CVE-2012-0833?

It affects 1 product.

Linux distribution packages (22)

`adminutil` Red Hat:directory_server:8::el5	All versions	`0:1.1.8-3.el5dsrv`
`adminutil-debuginfo` Red Hat:directory_server:8::el5	All versions	`0:1.1.8-3.el5dsrv`
`adminutil-devel` Red Hat:directory_server:8::el5	All versions	`0:1.1.8-3.el5dsrv`
`redhat-ds-base` Red Hat:directory_server:8::el5	All versions	`0:8.2.11-5.el5dsrv`
`redhat-ds-base-debuginfo` Red Hat:directory_server:8::el5	All versions	`0:8.2.11-5.el5dsrv`
`redhat-ds-base-devel` Red Hat:directory_server:8::el5	All versions	`0:8.2.11-5.el5dsrv`
`389-ds-base` Red Hat:enterprise_linux:6::client	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-devel` Red Hat:enterprise_linux:6::client	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-libs` Red Hat:enterprise_linux:6::client	All versions	`0:1.2.10.2-15.el6`
`389-ds-base` Red Hat:enterprise_linux:6::computenode	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-devel` Red Hat:enterprise_linux:6::computenode	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-libs` Red Hat:enterprise_linux:6::computenode	All versions	`0:1.2.10.2-15.el6`
`389-ds-base` Red Hat:enterprise_linux:6::server	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-devel` Red Hat:enterprise_linux:6::server	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-libs` Red Hat:enterprise_linux:6::server	All versions	`0:1.2.10.2-15.el6`
`389-ds-base` Red Hat:enterprise_linux:6::workstation	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-devel` Red Hat:enterprise_linux:6::workstation	All versions	`0:1.2.10.2-15.el6`
`389-ds-base-libs` Red Hat:enterprise_linux:6::workstation	All versions	`0:1.2.10.2-15.el6`

Products include Fedoraproject 389 Directory Server.

How do I fix CVE-2012-0833?

Upgrade to a fixed version.

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-2012-0833 being exploited?

There is no known exploitation of CVE-2012-0833 in the wild and no public exploit code.

Sources

Also known as GHSA-29ch-37gp-6r87, RHSA-2012:0813, RHSA-2013:0549.