Versions of mysql before 2.14.0 are vulnerable to remove memory exposure.

Affected versions of mysql package allocate and send an uninitialized memory over the network when a number is provided as a password.

Only mysql running on Node.js versions below 6.0.0 are affected due to a throw added in newer node.js versions.

Proof of Concept:

require('mysql').createConnection({
  host: 'localhost',
  user: 'user',
  password : USERPROVIDEDINPUT,  // number
  database : 'my_db'
}).connect();

Recommendation

Update to version 2.14.0 or later.

References

• mysqljs/mysql@310c6a7
• https://www.npmjs.com/advisories/602
• mysqljs/mysql@192fe45