National Vulnerability Database (NVD) National Vulnerability Database (CVE-2010-4626)

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Vulnerability Summary for CVE-2010-4626

Original release date:12/30/2010

Last revised:01/11/2011

Source: US-CERT/NIST

Overview

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

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:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

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External Source: XF

Name: mybb-myrand-unauth-access(64516)

Hyperlink:http://xforce.iss.net/xforce/xfdb/64516

External Source: MLIST

Name: [oss-security] 20101206 Re: CVE request: mybb before 1.4.11 and before 1.4.12

Hyperlink:http://openwall.com/lists/oss-security/2010/12/06/2

External Source: MLIST

Name: [oss-security] 20101011 Re: CVE request: mybb before 1.4.11 and before 1.4.12

Hyperlink:http://openwall.com/lists/oss-security/2010/10/11/8

External Source: MLIST

Name: [oss-security] 20101008 CVE request: mybb before 1.4.11 and before 1.4.12

Hyperlink:http://openwall.com/lists/oss-security/2010/10/08/7