| 제목 | UTT HiPER 520 nv520v3v1.7.7-160105 Command Injection |
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| 설명 | Technical Summary: A critical OS command injection vulnerability was identified in the UTT HiPER 520 router (firmware nv520v3v1.7.7-160105). The vulnerability is located in the sub_44EFB4 function of the rehttpd binary, which handles requests to the /goform/formReleaseConnect endpoint.
Vulnerability Detail: The application uses websGetVar to retrieve the Isp_Name parameter. Although the program logic attempts to process this input, it fails to properly sanitize the string before passing it to a doSystem call (via sub_4407D4). Due to this insecure handling, an authenticated attacker can inject arbitrary shell commands using metacharacters (e.g., ;).
Exploit Proof: As demonstrated in the PoC, sending a POST request to /goform/formReleaseConnect with the payload delstr=&id=&Isp_Name=1;touch /tmp/2026-1-29&Isp_Type= results in the execution of the touch command on the underlying Linux system with root privileges. This confirms the ability to execute arbitrary code. |
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| 원천 | ⚠️ https://github.com/cha0yang1/UTT520CVE/blob/main/UTTRCE2.md |
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| 사용자 | Ruler-Chovy (UID 95098) |
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| 제출 | 2026. 02. 07. AM 11:30 (7 개월 ago) |
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| 모더레이션 | 2026. 02. 20. AM 09:00 (13 days later) |
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| 상태 | 수락 |
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| VulDB 항목 | 347083 [UTT HiPER 520 1.7.7-160105 Web Management Interface formReleaseConnect sub_44EFB4 Isp_Name 권한 상승] |
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| 포인트들 | 20 |
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