CVE-2011-2205 Denial of service in n/a

Medium 5.0 Published 22 Jun 2011 Updated 6 Aug 2024

Remote attackers can cause denial of service in Prosody XMPP server via crafted XML with nested entity references, leading to resource exhaustion.

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

What is CVE-2011-2205?

CVE-2011-2205 is a medium-severity denial of service vulnerability in n/a, published on 22 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Prosody before 0.8.1 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Weakness: CWE-399

Which versions are affected by CVE-2011-2205?

It affects 1 product.

Products include Prosody Prosody.

How do I fix CVE-2011-2205?

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-2011-2205 being exploited?

There is no known exploitation of CVE-2011-2205 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2011-2205, GHSA-92pm-rc7q-ch3w.