Jenkin Audit Trail <=3.2 - Cross-Site Scripting

mediumseverity

6.1CVSS score

76%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Jenkins Audit Trail 3.2 and earlier does not escape the error message for the URL Patterns field form validation, resulting in a reflected cross-site scripting vulnerability.

Impact

Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the application, leading to potential data theft, session hijacking, or defacement.

Fix

Upgrade to the latest version of Jenkin Audit Trail (>=3.3) which includes a fix for this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/descriptorByName/AuditTrailPlugin/regexCheck?value=*j%3Ch1%3Esample ; GET {{BaseURL}}/jenkins/descriptorByName/AuditTrailPlugin/regexCheck?value=*j%3Ch1%3Esample
Positive when: contains "<h1>sample" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2020-2140 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-2140

info:
  name: Jenkin Audit Trail <=3.2 - Cross-Site Scripting
  author: j3ssie/geraldino2
  severity: medium
  description: Jenkins Audit Trail 3.2 and earlier does not escape the error message for the URL Patterns field form validation, resulting in a reflected cross-site scripting vulnerability.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the application, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Upgrade to the latest version of Jenkin Audit Trail (>=3.3) which includes a fix for this vulnerability.
  reference:
    - https://www.jenkins.io/security/advisory/2020-03-09/
    - https://nvd.nist.gov/vuln/detail/CVE-2020-2140
    - https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1722
    - http://www.openwall.com/lists/oss-security/2020/03/09/1
    - https://github.com/merlinepedra25/nuclei-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2020-2140
    cwe-id: CWE-79
    epss-score: 0.75975
    epss-percentile: 0.99531
    cpe: cpe:2.3:a:jenkins:audit_trail:*:*:*:*:*:jenkins:*:*
  metadata:
    max-request: 2
    vendor: jenkins
    product: audit_trail
    framework: jenkins
  tags: cve,cve2020,jenkins,xss,plugin,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/descriptorByName/AuditTrailPlugin/regexCheck?value=*j%3Ch1%3Esample"
      - "{{BaseURL}}/jenkins/descriptorByName/AuditTrailPlugin/regexCheck?value=*j%3Ch1%3Esample"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - <h1>sample

      - type: word
        part: header
        words:
          - "text/html"

      - type: status
        status:
          - 200

References

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