Cryptographic issues in Drupal - CVE-2013-6386
Published: December 7, 2013 / Updated: August 10, 2020
Vulnerability identifier: #VU42278
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-6386
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
Drupal 6.x before 6.29 and 7.x before 7.24 uses the PHP mt_rand function to generate random numbers, which uses predictable seeds and allows remote attackers to predict security strings and bypass intended restrictions via a brute force attack.
Affected software
Drupal
Fedora
drupal6
drupal7
Fedora
drupal6
drupal7
How to mitigate CVE-2013-6386
Install update from vendor's website.
drupal6 - addressed in versions 6.29-1.el5, 6.29-1.el6
drupal7 - addressed in versions 7.24-1.el5, 7.24-1.el6
drupal7 - addressed in versions 7.24-1.el5, 7.24-1.el6