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

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CVE-2015-8973

Severity CVSS v4.0:
Pending analysis
Type:
CWE-284 Improper Access Control
Publication date:
31/01/2017
Last modified:
20/04/2025

Description

xmlhttp.php in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 allows remote attackers to bypass intended access restrictions via vectors related to the forum password.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L CVSS v3.1 Severity and Metrics:

Base Score: 8.30 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): Low

Base Score 3.x
8.30
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:* 1.8.5 (including)
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:* 1.6.17 (including)
cpe:2.3:a:mybb:mybb:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:mybb:mybb:1.8.5:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools