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.
Metrics
CVSS 2.0 5.1/10
AV:N/AC:H/Au:N/C:P/I:P/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://blog.mybb.com/2010/04/13/mybb-1-4-12-released-security-maintenance-update/
- http://dev.mybboard.net/issues/843
- http://dev.mybboard.net/projects/mybb/repository/revisions/4872
- http://openwall.com/lists/oss-security/2010/10/08/7
- http://openwall.com/lists/oss-security/2010/10/11/8
- http://openwall.com/lists/oss-security/2010/12/06/2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64516
- http://blog.mybb.com/2010/04/13/mybb-1-4-12-released-security-maintenance-update/
- http://dev.mybboard.net/issues/843
- http://dev.mybboard.net/projects/mybb/repository/revisions/4872
- http://openwall.com/lists/oss-security/2010/10/08/7
- http://openwall.com/lists/oss-security/2010/10/11/8
- http://openwall.com/lists/oss-security/2010/12/06/2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64516
Timeline
- Published
- Dec 30, 2010
- Last modified
- Jun 16, 2026
- NVD status
- Modified