CVE-2015-5730

WordPress Core < 4.2.4 - Timing Side-Channel Attack

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated.

La función sanitize_widget_instance en wp-includes/class-wp-customize-widgets.php en WordPress en versiones anteriores a 4.2.4 no usa una comparación a tiempo constante para los widgets, lo que permite a atacantes remotos llevar a cabo un ataque de sincronización de canal lateral midiendo el retraso antes de que sea calculada la desigualdad.

Several vulnerabilities have been fixed in Wordpress, the popular blogging engine.

*Credits: Johannes Schmitt

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-08-04 CVE Reserved
2015-08-04 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-208: Observable Timing Discrepancy

CAPEC

References (9)

URL	Tag	Source
http://openwall.com/lists/oss-security/2015/08/04/7	Mailing List
http://www.securityfocus.com/bid/76160	Vdb Entry
http://www.securitytracker.com/id/1033178	Vdb Entry
https://core.trac.wordpress.org/changeset/33535	X_refsource_confirm
https://core.trac.wordpress.org/changeset/33536	X_refsource_confirm
https://wpvulndb.com/vulnerabilities/8130	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
https://codex.wordpress.org/Version_4.2.4	2017-09-21
https://wordpress.org/news/2015/08/wordpress-4-2-4-security-and-maintenance-release	2017-09-21

URL	Date	SRC
http://www.debian.org/security/2015/dsa-3332	2017-09-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				<= 4.2.3 Search vendor "Wordpress" for product "Wordpress" and version " <= 4.2.3"		-		Affected