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5.8	$0-$5k	0.00

A vulnerability was found in WordPress (Content Management System). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the file flashmediaelement.swf of the component Sandbox. The manipulation as part of a SWF File leads to a input validation vulnerability (Cross-Domain). The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf file.

The bug was discovered 11/10/2016. The weakness was shared 10/12/2017 (Website). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2016-9263 since 11/10/2016. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 336 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 104356 (WordPress < 4.8.3 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r.

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104356). The entry 108257 is related to this item.

Productinfo

Type

• Content Management System

Name

• WordPress

Version

• 0.7.0
• 0.7.1
• 0.7.2
• 1.0
• 1.0 rc1
• 1.0.1
• 1.0.1 rc1
• 1.0.2
• 1.1
• 1.1.1
• 1.2
• 1.2 Beta
• 1.2 rc1
• 1.2 rc2
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.3
• 1.3.2
• 1.3.3
• 1.4
• 1.5
• 1.5.1
• 1.5.1.1
• 1.5.1.2
• 1.5.1.3
• 1.5.2
• 1.6.2
• 2.0
• 2.0 rc1
• 2.0.1
• 2.0.1 rc1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.5 Beta1
• 2.0.5 rc1
• 2.0.6
• 2.0.6 Beta1
• 2.0.6 rc1
• 2.0.6 rc2
• 2.0.7
• 2.0.7 rc1
• 2.0.7 rc2
• 2.0.8
• 2.0.8 rc1
• 2.0.9
• 2.0.9 Beta1
• 2.0.9 rc1
• 2.0.10
• 2.0.10 rc1
• 2.0.10 rc2
• 2.0.10 rc3
• 2.0.11
• 2.1
• 2.1 Beta1
• 2.1 Beta2
• 2.1 Beta3
• 2.1 Beta4
• 2.1 rc1
• 2.1 rc2
• 2.1.1
• 2.1.1 Beta1
• 2.1.1 rc1
• 2.1.2
• 2.1.3
• 2.2
• 2.2 rc1
• 2.2 rc2
• 2.2.1
• 2.2.1 rc1
• 2.2.1 rc2
• 2.2.2
• 2.2.3
• 2.3
• 2.3 Beta1
• 2.3 Beta2
• 2.3 Beta3
• 2.3 rc1
• 2.3.1
• 2.3.1 Beta1
• 2.3.1 rc1
• 2.3.2
• 2.3.2 Beta1
• 2.3.2 Beta2
• 2.3.2 Beta3
• 2.3.2 rc1
• 2.3.3
• 2.5
• 2.5 rc1
• 2.5 rc2
• 2.5 rc3
• 2.5.1
• 2.6
• 2.6 Beta1
• 2.6 Beta2
• 2.6 Beta3
• 2.6 rc1
• 2.6.1
• 2.6.1 Beta1
• 2.6.1 Beta2
• 2.6.2
• 2.6.3
• 2.6.5
• 2.7
• 2.7 Beta1
• 2.7 Beta2
• 2.7 Beta3
• 2.7 rc1
• 2.7 rc2
• 2.7.1
• 2.8
• 2.8 Beta1
• 2.8 Beta2
• 2.8 rc1
• 2.8.1
• 2.8.1 Beta1
• 2.8.1 Beta2
• 2.8.1 rc1
• 2.8.2
• 2.8.3
• 2.8.4
• 2.8.4:a
• 2.8.5
• 2.8.5 Beta1
• 2.8.5.1
• 2.8.5.2
• 2.8.6
• 2.9
• 2.9 Beta1
• 2.9 Beta2
• 2.9 rc1
• 2.9.1
• 2.9.1 Beta1
• 2.9.1 rc1
• 2.9.1.1
• 2.9.2
• 3.0
• 3.0 Beta1
• 3.0 Beta2
• 3.0 rc1
• 3.0 rc2
• 3.0 rc3
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.1
• 3.1 Beta1
• 3.1 Beta2
• 3.1 rc1
• 3.1 rc2
• 3.1 rc3
• 3.1 rc4
• 3.1.1
• 3.1.1 rc1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.2.0
• 3.2.1
• 3.2.2
• 3.3
• 3.3 Beta1
• 3.3 Beta2
• 3.3 Beta3
• 3.3 Beta4
• 3.3 rc1
• 3.3 rc2
• 3.3 rc3
• 3.3.1
• 3.3.2
• 3.3.2 rc1
• 3.3.3
• 3.4
• 3.4 Beta1
• 3.4 Beta2
• 3.4 Beta3
• 3.4 Beta4
• 3.4 rc1
• 3.4 rc2
• 3.4 rc3
• 3.4 rc4
• 3.4.0
• 3.4.1
• 3.4.2
• 3.5
• 3.5 Beta1
• 3.5 Beta2
• 3.5 Beta3
• 3.5 rc1
• 3.5 rc2
• 3.5 rc3
• 3.5 rc4
• 3.5.0
• 3.5.1
• 3.5.2
• 3.6
• 3.6 Beta1
• 3.6 Beta2
• 3.6 Beta3
• 3.6 Beta4
• 3.6 rc1
• 3.6 rc2
• 3.6.1
• 3.7
• 3.7 Beta1
• 3.7 Beta2
• 3.7 rc1
• 3.7 rc2
• 3.7.1
• 3.7.2
• 3.7.3
• 3.7.4
• 3.7.5
• 3.8
• 3.8 Beta1
• 3.8 rc1
• 3.8 rc2
• 3.8.1
• 3.8.1 rc1
• 3.8.2
• 3.8.3
• 3.8.4
• 3.8.5
• 3.9
• 3.9 Beta1
• 3.9 Beta2
• 3.9 Beta3
• 3.9 rc1
• 3.9 rc2
• 3.9.0
• 3.9.1
• 3.9.1 rc1
• 3.9.2
• 3.9.3
• 4.0
• 4.0 Beta1
• 4.0 Beta2
• 4.0 Beta3
• 4.0 Beta4
• 4.0 rc1
• 4.0 rc2
• 4.0.1
• 4.1
• 4.1 Beta1
• 4.1 Beta2
• 4.1 rc1
• 4.1 rc2
• 4.1 rc3
• 4.1.1
• 4.1.2
• 4.2
• 4.2 Beta1
• 4.2 Beta2
• 4.2 Beta3
• 4.2 Beta4
• 4.2 rc1
• 4.2 rc2
• 4.2 rc3
• 4.2 rc4
• 4.2.1
• 4.2.2
• 4.2.3
• 4.2.4
• 4.3
• 4.3 Beta1
• 4.3 Beta2
• 4.3 Beta3
• 4.3 Beta4
• 4.3 rc1
• 4.3 rc2
• 4.3 rc3
• 4.3.0
• 4.3.1
• 4.4
• 4.4 Beta1
• 4.4 Beta2
• 4.4 Beta3
• 4.4 Beta4
• 4.4 rc1
• 4.4.0
• 4.4.1
• 4.4.2
• 4.5
• 4.5 Beta1
• 4.5 Beta2
• 4.5 Beta3
• 4.5 Beta4
• 4.5 rc1
• 4.5 rc2
• 4.5 rc3
• 4.5.1
• 4.5.1 rc1
• 4.5.1 rc2
• 4.5.2
• 4.5.3
• 4.6
• 4.6 Beta1
• 4.6 Beta2
• 4.6 Beta3
• 4.6 Beta4
• 4.6 rc1
• 4.6 rc2
• 4.6 rc3
• 4.6 rc4
• 4.6.1
• 4.7
• 4.7 Beta1
• 4.7 Beta2
• 4.7 Beta3
• 4.7 Beta4
• 4.7 rc1
• 4.7 rc2
• 4.7 rc3
• 4.7.1
• 4.7.1 rc1
• 4.7.2
• 4.7.3
• 4.7.3 rc1
• 4.7.4
• 4.7.4 rc1
• 4.7.5
• 4.8
• 4.8 Beta1
• 4.8 Beta2
• 4.8 rc1
• 4.8 rc2
• 4.8.1
• 4.8.1 Beta1
• 4.8.1 rc1
• 4.8.1 rc2
• 4.8.2

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Cross-Domain
Class: Input validation / Cross-Domain
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 104356
Nessus Name: WordPress < 4.8.3 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/10/2016 🔍
11/10/2016 +0 days 🔍
10/12/2017 +336 days 🔍
10/12/2017 +0 days 🔍
10/12/2017 +0 days 🔍
10/13/2017 +1 days 🔍
10/31/2017 +18 days 🔍
11/02/2017 +2 days 🔍
01/16/2021 +1171 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: securityfocus.com⛔
Researcher: Enguerran Gillier
Status: Not defined

CVE: CVE-2016-9263 (🔍)
SecurityFocus: 101294 - WordPress CVE-2016-9263 Cross Site Scripting Vulnerability

See also: 🔍

Entryinfo

Created: 10/13/2017 08:59
Updated: 01/16/2021 19:26
Changes: 10/13/2017 08:59 (69), 06/07/2020 19:06 (7), 01/16/2021 19:26 (2)
Complete: 🔍

Discussion

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