CVE-2016-7439 Information disclosure in n/a

Medium 5.5 Published 13 Dec 2016 Updated 6 Aug 2024

Local attackers can discover RSA keys by exploiting cache-bank timing differences in the wolfSSL library implementation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2016-7439?

CVE-2016-7439 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 13 Dec 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The C software implementation of RSA in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to discover RSA keys by leveraging cache-bank hit differences.

Weakness: CWE-310

Which versions are affected by CVE-2016-7439?

It affects 1 product.

Products include Wolfssl Wolfssl.

How do I fix CVE-2016-7439?

Upgrade to a fixed version.

Is CVE-2016-7439 being exploited?

There is no known exploitation of CVE-2016-7439 in the wild and no public exploit code.

All Wolfssl Wolfssl vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-7439, GHSA-rrp5-xgfv-3935, UBUNTU-CVE-2016-7439.