CVE-2017-10789

The DBD::mysql module through 4.043 for Perl uses the mysql_ssl=1 setting to mean that SSL is optional (even though this setting's documentation has a "your communication with the server will be encrypted" statement), which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, a related issue to CVE-2015-3152.

USN-5344-1 — libdbd-mysql-perl vulnerabilities

Affected: Ubuntu:Pro:16.04:LTS: libdbd-mysql-perl

It was discovered that the DBD::mysql module, when configured with server-side prepared statement support, was susceptible to operations that would result in improper memory access. An attacker could possibly use this issue to cause DBD::mysql to crash, resulting in a denial of service. (CVE-2016-1249, CVE-2016-1251)

It was discovered that the DBD::mysql module was susceptible to an operation that would result in improper memory access, introduced through incorrect documentation and code examples. An attacker could possibly use this issue to cause DBD::mysql to crash or potentially cause other, unspecified, impact. (CVE-2017-10788)

It was discovered that the DBD::mysql module processed SSL/TLS settings in a way that did not fully correlate with the respective documentation for each setting. An attacker could possibly use this to perform a cleartext-downgrade attack. (CVE-2017-10789)

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CVE-2017-10789

USN-5344-1 — libdbd-mysql-perl vulnerabilities