CVE-2011-4320 Ejabberd DoS via malformed stanza
Remote authenticated users can cause a denial of service in ejabberd via a malformed publish stanza, requiring an upgrade to mitigate.
- 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-2011-4320?
CVE-2011-4320 is a medium-severity denial of service vulnerability in n/a, published on 18 Feb 2012. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The mod_pubsub module (mod_pubsub.erl) in ejabberd 2.1.8 and 3.0.0-alpha-3 allows remote authenticated users to cause a denial of service (infinite loop) via a stanza with a publish tag that lacks a node attribute.
Weakness: CWE-399
Which versions are affected by CVE-2011-4320?
4 open source packages ship an affected version, including ejabberd. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ejabberd Hex | All versions | 2.1.9 |
ejabberd Hex | All versions | 2.1.9 |
ejabberd Hex | From 3.0.0-alpha-1 | 3.0.0-alpha-4 |
ejabberd Hex | From 3.0.0-alpha-1 | 3.0.0-alpha-4 |
Products include Process-One Ejabberd.
How do I fix CVE-2011-4320?
Upgrade ejabberd to a fixed version for your release line: 2.1.9 or 3.0.0-alpha-4.
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-2011-4320 being exploited?
There is no known exploitation of CVE-2011-4320 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2011-4320, GHSA-2h3q-v47h-f4rc.