SB2018092102 - Multiple vulnerabilities in MediaWiki

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Main Vulnerability Database SB2018092102

SB2018092102 - Multiple vulnerabilities in MediaWiki

Published: September 21, 2018

Security Bulletin ID SB2018092102
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Security restrictions bypass (CVE-ID: CVE-2018-0503)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote authenticated attacker to bypass certain security restrictions.

The vulnerability exists due to value of "$wgRateLimits" overrides setting for "newbie" users. A remote authenticated attacker can bypass intended limits.


2) Improper access control (CVE-ID: CVE-2018-0504)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote authenticated attacker to gain access to sensitive information.

The vulnerability exists due to incorrect validation of user privileges when log event is partially hidden. A remote authenticated attacker can access sensitive information from the log event via the 'Special:Redirect/logid' function.


3) Improper access control (CVE-ID: CVE-2018-0505)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote authenticated attacker to bypass certain security restrictions.

The vulnerability exists due to incorrect validation of user privileges. A remote authenticated user with privileges to change user rights can bypass certain security controls.


Remediation

Install update from vendor's website.

References