CVE-2008-4409 Denial of service in n/a
Attackers can cause denial of service via memory consumption and crashes by providing malicious XML documents to applications using libxml2.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2008-4409?
CVE-2008-4409 is a medium-severity denial of service vulnerability in Xmlsoft Libxml2, published on 3 Oct 2008. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
libxml2 2.7.0 and 2.7.1 does not properly handle "predefined entities definitions" in entities, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash), as demonstrated by use of xmllint on a certain XML document, a different vulnerability than CVE-2003-1564 and CVE-2008-3281.
Weakness: CWE-399
Which versions are affected by CVE-2008-4409?
It affects 1 product.
Products include Xmlsoft Libxml2.
How do I fix CVE-2008-4409?
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-2008-4409 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2008-4409 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Xmlsoft Libxml2
Sources
Also known as CVE-2008-4422, GHSA-34h5-p5c9-pjw6.