Add vpatch-CVE-2021-24786 rule and test

[crowdsec-automation]

This rule detects exploitation attempts for CVE-2021-24786, a SQL injection vulnerability in the Download Monitor WordPress plugin. The attack is performed by injecting SQL via the orderby parameter in requests to /wp-admin/edit.php. The rule:

• Matches requests to /wp-admin/edit.php (case-insensitive, URL-decoded).
• Inspects the orderby argument using a regex [^a-z0-9] to detect any non-alphanumeric characters, which are strong indicators of SQL injection attempts in this context.
• Uses lowercase and urldecode transforms to ensure normalization and case-insensitive matching.
• Labels and classification fields are set according to the CVE and CWE references from the nuclei template.

Description

This PR adds a virtual patch rule and associated tests for CVE-2021-24786, a SQL injection vulnerability in the Download Monitor WordPress plugin.

Checklist

• I have read the contributing guide
• I have tested my changes locally
• For new parsers or scenarios, tests have been added
• I have run the hub linter and no issues were reported (see contributing guide)
• Automated tests are passing
• AI was used to generate any/all content of this PR

[github-actions]

Hello @crowdsec-automation and thank you for your contribution!

❗ It seems that the following scenarios are not part of the 'crowdsecurity/appsec-virtual-patching' collection:

🔴 crowdsecurity/vpatch-CVE-2021-24786 🔴

[github-actions]

Hello @crowdsec-automation and thank you for your contribution!

I'm a bot that helps maintainers to validate scenarios and ensure they include all the required information.
I've found some errors in your scenarios, please fix them and re-submit your PR, or ask for help if you need it.

The following items have errors:

crowdsecurity/crs-exclusion-plugin-cpanel:

• labels not found

crowdsecurity/crs-exclusion-plugin-dokuwiki:

• labels not found

crowdsecurity/crs-exclusion-plugin-drupal:

• labels not found

crowdsecurity/crs-exclusion-plugin-nextcloud:

• labels not found

crowdsecurity/crs-exclusion-plugin-phpbb:

• labels not found

crowdsecurity/crs-exclusion-plugin-phpmyadmin:

• labels not found

crowdsecurity/crs-exclusion-plugin-wordpress:

• labels not found

crowdsecurity/crs-exclusion-plugin-xenforo:

• labels not found

Mitre ATT&CK

Information about mitre attack can be found here.
As an example, some common mitre attack techniques:

• T1110 for bruteforce attacks
• T1595 and T1190 for exploitation of public vulnerabilities
• T1595 for generic scanning of exposed applications

Expected format is (where XXXX is the technique ID):

labels:
  classification:
    - attack.TXXXX

CVEs

If your scenario covers a specific CVE (Common Vulnerabilities and Exposures), please add it.

Expected format is (where CVE-XXX-XXX is the CVE ID):

labels:
  classification:
    - cve.CVE-XXX-XXX

Behaviors

Please identify the behavior(s) your scenario is targeting. You can find the list of available behaviors here.

Expected format is (where <behavior> is the behavior you want to target):

labels:
  behavior: <behavior>

See the labels documentation for more information.

[buixor]

@copilot instead of looking for `, use a regex to discard non a-z0-9 values

[Copilot]

@copilot instead of looking for `, use a regex to discard non a-z0-9 values

Updated in 7b63cab — replaced the backtick contains match with type: regex / value: "[^a-z0-9]", consistent with the pattern used in other vpatch rules like CVE-2019-9762 and CVE-2020-10987.

[github-actions]

Hello @Copilot,

✅ The new VPATCH Rule is compliant, thank you for your contribution!

[github-actions]

Hello @Copilot and thank you for your contribution!

I'm a bot that helps maintainers to validate scenarios and ensure they include all the required information.
I've found some errors in your scenarios, please fix them and re-submit your PR, or ask for help if you need it.

The following items have errors:

crowdsecurity/crs-exclusion-plugin-cpanel:

• labels not found

crowdsecurity/crs-exclusion-plugin-dokuwiki:

• labels not found

crowdsecurity/crs-exclusion-plugin-drupal:

• labels not found

crowdsecurity/crs-exclusion-plugin-nextcloud:

• labels not found

crowdsecurity/crs-exclusion-plugin-phpbb:

• labels not found

crowdsecurity/crs-exclusion-plugin-phpmyadmin:

• labels not found

crowdsecurity/crs-exclusion-plugin-wordpress:

• labels not found

crowdsecurity/crs-exclusion-plugin-xenforo:

• labels not found

Mitre ATT&CK

Information about mitre attack can be found here.
As an example, some common mitre attack techniques:

• T1110 for bruteforce attacks
• T1595 and T1190 for exploitation of public vulnerabilities
• T1595 for generic scanning of exposed applications

Expected format is (where XXXX is the technique ID):

labels:
  classification:
    - attack.TXXXX

CVEs

If your scenario covers a specific CVE (Common Vulnerabilities and Exposures), please add it.

Expected format is (where CVE-XXX-XXX is the CVE ID):

labels:
  classification:
    - cve.CVE-XXX-XXX

Behaviors

Please identify the behavior(s) your scenario is targeting. You can find the list of available behaviors here.

Expected format is (where <behavior> is the behavior you want to target):

labels:
  behavior: <behavior>

See the labels documentation for more information.

[github-actions]

Hello @buixor and thank you for your contribution!

❗ It seems that the following scenarios are not part of the 'crowdsecurity/appsec-virtual-patching' collection:

🔴 crowdsecurity/vpatch-CVE-2023-6360 🔴
🔴 crowdsecurity/vpatch-CVE-2023-0600 🔴
🔴 crowdsecurity/vpatch-CVE-2023-0900 🔴
🔴 crowdsecurity/vpatch-CVE-2023-6567 🔴
🔴 crowdsecurity/vpatch-CVE-2023-23489 🔴
🔴 crowdsecurity/vpatch-CVE-2024-1061 🔴
🔴 crowdsecurity/vpatch-CVE-2025-40552 🔴
🔴 crowdsecurity/vpatch-CVE-2023-6623 🔴
🔴 crowdsecurity/vpatch-CVE-2024-1071 🔴
🔴 crowdsecurity/vpatch-CVE-2023-4634 🔴
🔴 crowdsecurity/vpatch-CVE-2023-2009 🔴
🔴 crowdsecurity/vpatch-CVE-2023-23488 🔴

[github-actions]

Hello @buixor and thank you for your contribution!

I'm a bot that helps maintainers to validate scenarios and ensure they include all the required information.
I've found some errors in your scenarios, please fix them and re-submit your PR, or ask for help if you need it.

The following items have errors:

crowdsecurity/crs-exclusion-plugin-cpanel:

• labels not found

crowdsecurity/crs-exclusion-plugin-dokuwiki:

• labels not found

crowdsecurity/crs-exclusion-plugin-drupal:

• labels not found

crowdsecurity/crs-exclusion-plugin-nextcloud:

• labels not found

crowdsecurity/crs-exclusion-plugin-phpbb:

• labels not found

crowdsecurity/crs-exclusion-plugin-phpmyadmin:

• labels not found

crowdsecurity/crs-exclusion-plugin-wordpress:

• labels not found

crowdsecurity/crs-exclusion-plugin-xenforo:

• labels not found

Mitre ATT&CK

Information about mitre attack can be found here.
As an example, some common mitre attack techniques:

• T1110 for bruteforce attacks
• T1595 and T1190 for exploitation of public vulnerabilities
• T1595 for generic scanning of exposed applications

Expected format is (where XXXX is the technique ID):

labels:
  classification:
    - attack.TXXXX

CVEs

If your scenario covers a specific CVE (Common Vulnerabilities and Exposures), please add it.

Expected format is (where CVE-XXX-XXX is the CVE ID):

labels:
  classification:
    - cve.CVE-XXX-XXX

Behaviors

Please identify the behavior(s) your scenario is targeting. You can find the list of available behaviors here.

Expected format is (where <behavior> is the behavior you want to target):

labels:
  behavior: <behavior>

See the labels documentation for more information.