WordPress up to 5.0.0 jpg?file.php String code injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in WordPress up to 5.0.0. This affects an unknown function of the file jpg?file.php. The manipulation with the input jpg?file.php as part of String results in code injection. This vulnerability is known as CVE-2019-8942. It is possible to launch the attack remotely. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in WordPress up to 5.0.0 (Content Management System). Affected is an unknown function of the file jpg?file.php. The manipulation with the input value jpg?file.php leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

WordPress before 4.9.9 and 5.x before 5.0.1 allows remote code execution because an _wp_attached_file Post Meta entry can be changed to an arbitrary string, such as one ending with a .jpg?file.php substring. An attacker with author privileges can execute arbitrary code by uploading a crafted image containing PHP code in the Exif metadata. Exploitation can leverage CVE-2019-8943.

The bug was discovered 02/19/2019. The weakness was published 02/20/2019 by Ryan Dewhurst (Website). The advisory is shared for download at exploit-db.com. This vulnerability is traded as CVE-2019-8942 since 02/19/2019. It is possible to launch the attack remotely. The successful exploitation requires a authentication. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.

A public exploit has been developed in Python and been published 2 months after the advisory. The exploit is shared for download at exploit-db.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. By approaching the search of inurl:jpg?file.php it is possible to find vulnerable targets with Google Hacking. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176626 (Debian Security Update for wordpress (DSA 4401-1)).

Upgrading to version 4.9.9 or 5.0.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (46662) and SecurityFocus (BID 106220†). Further details are available at blog.ripstech.com. Similar entries are available at VDB-127992, VDB-127993, VDB-127994 and VDB-127995. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Content Management System

Name

• WordPress

Version

• 3.7.28
• 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
• 3.8.6
• 3.8.7
• 3.8.8
• 3.8.9
• 3.8.10
• 3.8.11
• 3.8.12
• 3.8.13
• 3.8.14
• 3.8.15
• 3.8.16
• 3.8.17
• 3.8.18
• 3.8.19
• 3.8.20
• 3.8.21
• 3.8.22
• 3.8.23
• 3.8.24
• 3.8.25
• 3.8.26
• 3.8.27
• 3.8.28
• 3.9.26
• 4.0
• 4.0 Beta1
• 4.0 Beta2
• 4.0 Beta3
• 4.0 Beta4
• 4.0 rc1
• 4.0 rc2
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.0.19
• 4.0.20
• 4.0.21
• 4.0.22
• 4.0.23
• 4.0.24
• 4.0.25
• 4.1
• 4.1 Beta1
• 4.1 Beta2
• 4.1 rc1
• 4.1 rc2
• 4.1 rc3
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.1.8
• 4.1.9
• 4.1.10
• 4.1.11
• 4.1.12
• 4.1.13
• 4.1.14
• 4.1.15
• 4.1.16
• 4.1.17
• 4.1.18
• 4.1.19
• 4.1.20
• 4.1.21
• 4.1.22
• 4.1.23
• 4.1.24
• 4.1.25
• 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
• 4.2.4 rc1
• 4.2.5
• 4.2.6
• 4.2.7
• 4.2.8
• 4.2.9
• 4.2.10
• 4.2.11
• 4.2.12
• 4.2.13
• 4.2.14
• 4.2.15
• 4.2.16
• 4.2.17
• 4.2.18
• 4.2.19
• 4.2.20
• 4.2.21
• 4.2.22
• 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
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5
• 4.3.6
• 4.3.7
• 4.3.8
• 4.3.9
• 4.3.10
• 4.3.11
• 4.3.12
• 4.3.13
• 4.3.14
• 4.3.15
• 4.3.16
• 4.3.17
• 4.3.18
• 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
• 4.4.3
• 4.4.4
• 4.4.5
• 4.4.6
• 4.4.7
• 4.4.8
• 4.4.9
• 4.4.10
• 4.4.11
• 4.4.12
• 4.4.13
• 4.4.14
• 4.4.15
• 4.4.16
• 4.4.17
• 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
• 4.5.4
• 4.5.5
• 4.5.6
• 4.5.7
• 4.5.8
• 4.5.9
• 4.5.10
• 4.5.11
• 4.5.12
• 4.5.13
• 4.5.14
• 4.5.15
• 4.5.16
• 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
• 4.6.1 rc1
• 4.6.2
• 4.6.3
• 4.6.4
• 4.6.5
• 4.6.6
• 4.6.7
• 4.6.8
• 4.6.9
• 4.6.10
• 4.6.11
• 4.6.12
• 4.6.13
• 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
• 4.7.6
• 4.7.7
• 4.7.8
• 4.7.9
• 4.7.10
• 4.7.11
• 4.7.12
• 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
• 4.8.3
• 4.8.4
• 4.8.5
• 4.8.6
• 4.8.7
• 4.8.8
• 4.9
• 4.9 Beta1
• 4.9 Beta2
• 4.9 Beta3
• 4.9 Beta4
• 4.9 rc1
• 4.9 rc2
• 4.9 rc3
• 4.9.1
• 4.9.1 Beta1
• 4.9.2
• 4.9.3
• 4.9.3 Beta1
• 4.9.3 rc1
• 4.9.4
• 4.9.5
• 4.9.5 Beta1
• 4.9.5 rc1
• 4.9.6
• 4.9.6 Beta1
• 4.9.6 rc1
• 4.9.6 rc2
• 4.9.7
• 4.9.8
• 5.0

License

• open-source

Website

• Product: https://wordpress.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: WordPress 4.9.9/5.0.1

Timelineinfo

12/13/2018 🔍
02/19/2019 +68 days 🔍
02/19/2019 +0 days 🔍
02/20/2019 +1 days 🔍
02/20/2019 +0 days 🔍
04/05/2019 +44 days 🔍
04/05/2019 +0 days 🔍
08/04/2025 +2313 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: 152396
Researcher: Ryan Dewhurst
Status: Confirmed

CVE: CVE-2019-8942 (🔍)
GCVE (CVE): GCVE-0-2019-8942
GCVE (VulDB): GCVE-100-131040
SecurityFocus: 106220 - WordPress Prior to 5.0.1 Multiple Security Vulnerabilities

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/20/2019 10:28
Updated: 08/04/2025 15:03
Changes: 02/20/2019 10:28 (74), 06/07/2020 14:19 (3), 07/11/2023 14:43 (4), 07/11/2023 14:47 (1), 08/04/2025 15:03 (14)
Complete: 🔍
Cache ID: 216::103

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