CVE-2016-0702 Information disclosure in n/a

What is CVE-2016-0702?

CVE-2016-0702 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 3 Mar 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack.

Weakness: CWE-200

Which versions are affected by CVE-2016-0702?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Nodejs Node.js, Openssl Openssl.

How do I fix CVE-2016-0702?

Upgrade to a fixed version.

Is CVE-2016-0702 being exploited?

There is no known exploitation of CVE-2016-0702 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-0702, GHSA-q7xg-gmg7-59f4, UBUNTU-CVE-2016-0702.