CVE-2016-2047 Security feature bypass in n/a

What is CVE-2016-2047?

CVE-2016-2047 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 27 Jan 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The ssl_verify_server_cert function in sql-common/client.c in MariaDB before 5.5.47, 10.0.x before 10.0.23, and 10.1.x before 10.1.10; Oracle MySQL 5.5.48 and earlier, 5.6.29 and earlier, and 5.7.11 and earlier; and Percona Server do not properly verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a "/CN=" string in a field in a certificate, as demonstrated by "/OU=/CN=bar.com/CN=foo.com."

Weakness: CWE-254

Which versions are affected by CVE-2016-2047?

It affects 7 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Mariadb Mariadb, Opensuse Leap, Oracle Linux, Oracle Mysql and 1 more.

How do I fix CVE-2016-2047?

Upgrade to a fixed version.

Is CVE-2016-2047 being exploited?

There is no known exploitation of CVE-2016-2047 in the wild and no public exploit code.

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 GHSA-gw5g-54qg-7583, UBUNTU-CVE-2016-2047.