CVE-2026-12851

*** Pendiente de traducción *** Multiple OS command injection vulnerabilities exist in the libNetSetObj.so functionality of GeoVision GV-I/O Box 4E 2.09. A specially crafted network packet can lead to command execution. An attacker can send a network request to trigger this vulnerability.<br /> <br /> <br /> `libNetSetObj.so` is an internal library used by various binaries on the device to configure the network stack (start and stop various services, configure IP, Netmask, gateway, dns, etc.)<br /> <br /> <br /> #### CNetSetObj::m_F_n_Set_DNS_Addr command injection<br /> <br /> The following function can take up to two addresses, performs no sanitization and then calls `system`. This is a classic command injection vulnerability. The function is reachable from both the network-exposed `DVRSearch` service and the `Network.cgi` endpoint. <br /> <br /> <br /> <br /> int __fastcall CNetSetObj::m_F_n_Set_DNS_Addr(CNetSetObj *this, char *dns1, char *dns2)<br /> <br /> {<br /> <br /> int result; // r0<br /> <br /> char v5[80]; // [sp+0h] [bp-50h] BYREF<br /> <br /> <br /> <br /> if ( !dns1 )<br /> <br /> result = 0;<br /> <br /> if ( dns1 )<br /> <br /> {<br /> <br /> sprintf(v5, "/bin/echo nameserver %s &gt; /etc/resolv.conf", dns1); // attacker controlled dns1 field<br /> <br /> system(v5);<br /> <br /> if ( dns2 )<br /> <br /> {<br /> <br /> sprintf(v5, "/bin/echo nameserver %s &gt;&gt; /etc/resolv.conf", dns2);<br /> <br /> system(v5);<br /> <br /> }<br /> <br /> return 1;<br /> <br /> }<br /> <br /> return result;