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Last updated: 12/19/2014 12:28:25 PM

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Vulnerability Summary for CVE-2010-4626

Original release date: 12/30/2010
Last revised: 01/11/2011


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.1 (MEDIUM) (AV:N/AC:H/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MLIST
Name: [oss-security] 20101206 Re: CVE request: mybb before 1.4.11 and before 1.4.12
External Source: CONFIRM
Name: http://blog.mybb.com/2010/04/13/mybb-1-4-12-released-security-maintenance-update/
External Source: CONFIRM
Name: http://dev.mybboard.net/projects/mybb/repository/revisions/4872
External Source: MLIST
Name: [oss-security] 20101008 CVE request: mybb before 1.4.11 and before 1.4.12
External Source: CONFIRM
Name: http://dev.mybboard.net/issues/843
External Source: MLIST
Name: [oss-security] 20101011 Re: CVE request: mybb before 1.4.11 and before 1.4.12
External Source: XF
Name: mybb-myrand-unauth-access(64516)

Technical Details

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