Man-in-the-middle attack in dbd-mysql - CVE-2017-10789
Published: May 31, 2018
Vulnerability identifier: #VU13111
CSH Severity: Low
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-10789
CWE-ID: CWE-300
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to conduct man-in-the-middle attack on the target system.
The vulnerability exists due to use of 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). A remote attacker can conduct man-in-the-middle attack, intercept of the communication channel between the affected app and spoof servers via a cleartext-downgrade attack.
Affected software
dbd-mysql
Fedora
openSUSE Leap
perl-DBD-MySQL
Fedora
openSUSE Leap
perl-DBD-MySQL
How to mitigate CVE-2017-10789
Install update from vendor's website.
perl-DBD-MySQL - update to 4.043-6.fc27