SB2016090306 - Fedora EPEL 5 update for wordpress

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Main Vulnerability Database SB2016090306

SB2016090306 - Fedora EPEL 5 update for wordpress

Published: September 3, 2016 Updated: April 24, 2025

Security Bulletin ID SB2016090306
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 67% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Path traversal and CSRF in wp_ajax_update_plugin() (CVE-ID: CVE-2016-6896)

The vulnerability allows a remote attacker to gain access to potentially sensitive data and cause denial of service.

The vulnerability exists due to insufficient sanitization of directory traversal sequences passed via the "plugin" HTTP GET parameter to wp_ajax_update_plugin() function in "/wp-admin/admin-ajax.php" script. A remote authenticated attacker can send a specially crafted HTTP GET request to vulnerable file and read contents of arbitrary file on the vulnerable system. Additionaly, it is possible to cause denial of service conditions by repeatedly reading /dev/random file and depleting the entropy pool.

This vulnerability can be exploited via CSRF attack, which will allow a remote unauthenticated attacker to cause denial of service of the target system.


2) Cross-site scripting in /wp-admin/includes/media.php script (CVE-ID: CVE-2016-7168)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability is caused by incorrect filtration of input data passed via image filename in /wp-admin/includes/media.php script. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in website administrator’s browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


3) Directory traversal in upgrade package uploader (CVE-ID: CVE-2016-7169)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient sanitization of input data within the upgrade package uploader. A remote authenticated user can use directory traversal sequences to write files outside the webroot directory.

Successful exploitation of this vulnerability may lead to website compromise.


Remediation

Install update from vendor's website.

References