Broken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR Deserialization

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Summary

CVECVE-2022-2438
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-06 18:15:13 UTC
Updated2026-04-08 18:17:25 UTC
DescriptionThe Broken Link Checker plugin for WordPress is vulnerable to deserialization of untrusted input via the '$log_file' value in versions up to, and including 1.11.16. This makes it possible for authenticated attackers with administrative privileges and above to call files using a PHAR wrapper that will deserialize the data and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/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]Primary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Managewp Broken Link Checker All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpmudev Broken Link Checker affected 1.11.16 semver Not specified

References

ReferenceSourceLinkTags
Vulnerability Advisories - Wordfence af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Third Party Advisory
Broken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR Deserialization af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Third Party Advisory
403 Forbidden af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Patch
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: Rasoul Jahanshahi (en)

Additional Advisory Data

SourceTimeEvent
CNA2022-07-18T00:00:00.000ZDisclosed
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