CVE-2016-8734 Denial of service in Apache Subversion
Attackers can cause denial of service in Apache Subversion via exponential XML entity expansion, consuming excessive CPU or memory resources.
- 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-2016-8734?
CVE-2016-8734 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 16 Oct 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Apache Subversion's mod_dontdothat module and HTTP clients 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4 are vulnerable to a denial-of-service attack caused by exponential XML entity expansion. The attack can cause the targeted process to consume an excessive amount of CPU resources or memory.
Weakness: CWE-400
Which versions are affected by CVE-2016-8734?
It affects 2 products.
Products include Apache Subversion, Debian Debian Linux.
How do I fix CVE-2016-8734?
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-2016-8734 being exploited?
There is no known exploitation of CVE-2016-8734 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
- CVE-2017-9800 A maliciously constructed svn+ssh:// URL would cause Subversion clients before 1.8.19, 1.9.x before 1.9.7, and 1.10.0.x through 1.10.0-alpha
- CVE-2013-4246 Denial of service in n/a
- CVE-2015-5259 Integer overflow in n/a
- CVE-2024-45720 Apache Subversion: Command line argument injection on Windows platforms
- CVE-2015-0202 Denial of service in n/a
Sources
Also known as DEBIAN-CVE-2016-8734, GHSA-x5mc-4p5h-grh2, MGASA-2017-0009, UBUNTU-CVE-2016-8734.