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CVE-2021-4473

CRITICAL

9.8

Description

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).

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/7/2026

Derniere modification4/7/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-78

References

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)

Correlations IOC

Aucune correlation enregistree

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