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wpexploitWpvulndbWPEX-ID:A554091E-39D1-4E7E-BBCF-19B2A7B8E89F
HistoryFeb 23, 2023 - 12:00 a.m.

BuddyForms < 2.7.8 - Unauthenticated PHAR Deserialization

2023-02-2300:00:00
wpvulndb
60

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.003 Low

EPSS

Percentile

65.4%

The plugin does not validate the url parameter of its upload_image_from_url AJAX action, which could allow unauthenticated attackers to perform PHAR deserialisation granted they an upload a file to the server and a suitable gadget chain is present as well

1. Create a malicious phar file.
2. Upload the malicious phar file as an image via the upload_image_from_url action.
3. Call the file with the phar:// wrapper using the same action. 

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.003 Low

EPSS

Percentile

65.4%

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