CVE-2013-4236 Denial of service in n/a

Low 2.7 Published 19 Aug 2013 Updated 6 Aug 2024

Privileged guest users can cause host unavailability via invalid XML characters in guest agent responses, impacting virtualization management.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2013-4236?

CVE-2013-4236 is a low-severity denial of service vulnerability in n/a, published on 19 Aug 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

VDSM in Red Hat Enterprise Virtualization 3 and 3.2 allows privileged guest users to cause the host to become "unavailable to the managment server" via invalid XML characters in a guest agent response. NOTE: this issue is due to an incomplete fix for CVE-2013-0167.

Which versions are affected by CVE-2013-4236?

It affects 1 product.

Linux distribution packages (10)

`vdsm` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-cli` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-debuginfo` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-hook-vhostmd` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-python` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-reg` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-xmlrpc` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:4.10.2-24.0.el6ev`
`vdsm` Red Hat:rhev_manager:3	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-bootstrap` Red Hat:rhev_manager:3	All versions	`0:4.10.2-24.0.el6ev`
`vdsm-debuginfo` Red Hat:rhev_manager:3	All versions	`0:4.10.2-24.0.el6ev`

Products include Redhat Enterprise Virtualization.

How do I fix CVE-2013-4236?

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-2013-4236 being exploited?

There is no known exploitation of CVE-2013-4236 in the wild and no public exploit code.

Sources

Also known as GHSA-jhj6-xfqh-j93v, RHSA-2013:1155.