Cryptographic issues in Drupal

1) Cryptographic issues

EUVDB-ID: #VU42278

Risk: Medium

CVSSv4.0: 2.7 [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/E:U/U:Green]

CVE-ID: CVE-2013-6386

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Drupal: 6.0 - 7.23

CPE2.3

• cpe:2.3:a:drupal:drupal:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
• cpe:2.3:a:drupal:drupal:6.2:*:*:*:*:*:*:*
• cpe:2.3:a:drupal:drupal:6.3:*:*:*:*:*:*:*
• cpe:2.3:a:drupal:drupal:6.8:*:*:*:*:*:*:*
• cpe:2.3:a:drupal:drupal:6.9:*:*:*:*:*:*:*

External links

https://secunia.com/advisories/56148
https://www.debian.org/security/2013/dsa-2804
https://www.debian.org/security/2013/dsa-2828
https://www.openwall.com/lists/oss-security/2013/11/22/4
https://drupal.org/SA-CORE-2013-003

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.