Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2010-4626

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
30/12/2010
Last modified:
11/04/2025

Description

The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not properly use the PHP mt_rand function, which makes it easier for remote attackers to obtain access to an arbitrary account by requesting a reset of the account's password, and then conducting a brute-force attack.

Impact

Vector 2.0
AV:N/AC:H/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.10 MEDIUM
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
5.10
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:* 1.4.11 (including)
cpe:2.3:a:mybb:mybb:1.00:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.01:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.7:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.1.8:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.02:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.2:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.2.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools