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CVE-2021-4473

CRITICAL

9.8

Descricao

Tianxin Internet Behavior Management System contains a command injection vulnerability in the Reporter component endpoint that allows unauthenticated attackers to execute arbitrary commands by supplying a crafted objClass parameter containing shell metacharacters and output redirection. Attackers can exploit this vulnerability to write malicious PHP files into the web root and achieve remote code execution with the privileges of the web server process. This vulnerability has been fixed in version NACFirmware_4.0.0.7_20210716.180815_topsec_0_basic.bin. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-06-01 (UTC).

Detalhes CVE

Pontuacao CVSS v3.19.8

SeveridadeCRITICAL

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado4/7/2026

Ultima modificacao4/7/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-78

Referencias

https://avd.aliyun.com/detail?id=AVD-2021-890232(disclosure@vulncheck.com)

https://cn-sec.com/archives/4631959.html(disclosure@vulncheck.com)

https://www.cnvd.org.cn/flaw/show/CNVD-2021-41972(disclosure@vulncheck.com)

https://www.cnvd.org.cn/patchInfo/show/280166(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/tianxin-internet-behavior-management-system-command-injection-via-toquery-php(disclosure@vulncheck.com)

Correlacoes IOC

Sem correlacoes registradas

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