CVE-2013-6461 Nokogiri vulnerable to DoS while parsing XML entities
Attackers can cause denial of service in applications using the Nokogiri Ruby gem by sending XML with excessive entity expansions.
- 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-2013-6461?
CVE-2013-6461 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 5 Nov 2019. 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
Nokogiri gem 1.5.x and 1.6.x has DoS while parsing XML entities by failing to apply limits
Weakness: CWE-776
Which versions are affected by CVE-2013-6461?
4 open source packages ship an affected version, including nokogiri. It affects 7 products.
| Package | Affected | Fixed in |
|---|---|---|
nokogiri RubyGems | From 1.5.0 | 1.5.11 |
nokogiri RubyGems | From 1.5.0 | 1.5.11 |
nokogiri RubyGems | From 1.6.0 | 1.6.1 |
nokogiri RubyGems | From 1.6.0 | 1.6.1 |
Products include Debian Debian Linux, Nokogiri Nokogiri, Redhat Cloudforms Management Engine, Redhat Enterprise Mrg, Redhat Openstack, Redhat Satellite and 1 more.
How do I fix CVE-2013-6461?
Upgrade nokogiri to a fixed version for your release line: 1.5.11 or 1.6.1.
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-2013-6461 being exploited?
There is no known exploitation of CVE-2013-6461 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as GHSA-jmhh-w7xp-wg39.