CVE-2015-2313 Denial of service in n/a

High 7.5 Published 9 Aug 2017 Updated 6 Aug 2024

Remote attackers can cause CPU exhaustion and denial of service in applications using Cap'n Proto by sending crafted small messages.

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

What is CVE-2015-2313?

CVE-2015-2313 is a high-severity denial of service vulnerability in n/a, published on 9 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.2, when an application invokes the totalSize method on an object reader, allows remote peers to cause a denial of service (CPU consumption) via a crafted small message, which triggers a "tight" for loop. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-2312.

Weakness: CWE-400

Which versions are affected by CVE-2015-2313?

It affects 1 product.

Products include Capnproto Capnproto.

How do I fix CVE-2015-2313?

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-2015-2313 being exploited?

There is no known exploitation of CVE-2015-2313 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2015-2313, GHSA-8f67-f75m-fxfm, UBUNTU-CVE-2015-2313.