CVE-2015-5312 Nokogiri subject to DoS via libxml2 vulnerability
Attackers can cause denial of service via CPU consumption by sending crafted XML data to applications using the vulnerable libxml2 library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-5312?
CVE-2015-5312 is a high-severity denial of service vulnerability in Apple Iphone Os, published on 15 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data, a different vulnerability than CVE-2014-3660.
Weakness: CWE-399
Which versions are affected by CVE-2015-5312?
2 open source packages ship an affected version, including nokogiri. It affects 13 products.
| Package | Affected | Fixed in |
|---|---|---|
nokogiri RubyGems | From 1.6.0 | 1.6.7.1 |
nokogiri RubyGems | From 1.6.0 | 1.6.7.1 |
Products include Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos, Canonical Ubuntu Linux, Debian Debian Linux and 7 more.
How do I fix CVE-2015-5312?
Upgrade nokogiri to 1.6.7.1 or later.
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-2015-5312 being exploited?
There is no known exploitation of CVE-2015-5312 in the wild and no public exploit code.
Other vulnerabilities in Apple Iphone Os
Sources
Also known as DEBIAN-CVE-2015-5312, ECHO-ad99-83b5-cd1c, GHSA-xjqg-9jvg-fgx2, UBUNTU-CVE-2015-5312.