Essential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via products

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-4402
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-10-20 07:15:15 UTC
Updated2026-04-08 17:17:02 UTC
DescriptionThe Essential Blocks plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.2.0 via deserialization of untrusted input in the get_products function. This allows unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Wpdeveloper Essential Blocks All All All All
Application Wpdeveloper Essential Blocks Pro All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpdevteam Essential Blocks Pro affected 1.1.0 semver Not specified
CNA Wpdevteam Gutenberg Essential Blocks Page Builder For Gutenberg Blocks Patterns affected 4.2.0 semver Not specified

References

ReferenceSourceLinkTags
403 Forbidden af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Exploit
Essential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via products af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Marco Wotschka (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-08-17T00:00:00.000ZDiscovered
CNA2023-08-18T00:00:00.000ZVendor Notified
CNA2023-09-13T00:00:00.000ZDisclosed
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