A remote code execution vulnerability exists in multiple Netcore and Netis routers models with firmware released prior to August 2014 due to the presence of an undocumented backdoor listener on UDP port 53413. Exact version boundaries remain undocumented. An unauthenticated remote attacker can send specially crafted UDP packets to execute arbitrary commands on the affected device. This backdoor uses a hardcoded authentication mechanism and accepts shell commands post-authentication. Some device models include a non-standard implementation of the echo command, which may affect exploitability.

A vulnerability was determined in Netcore NBR200V2 1.3.241127.071246. This affects an unknown part of the file /www/cgi-bin/networktools of the component CGI Diagnostic Endpoint. This manipulation of the argument param/key/val causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was determined in Netcore NBR100V2 1.3.240614.030928. This affects the function uci.apply of the file /usr/share/rpcd/acl.d/unauthenticated.json of the component ACL Handler. This manipulation of the argument section causes missing authorization. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was identified in Netcore NBR200V2 1.3.241127.071246. This impacts the function eval of the file /www/cgi-bin/networktools of the component Web Management Interface. Such manipulation of the argument QUERYSTRING leads to os command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was identified in Netcore NR289-GE 1.4.5102. This issue affects the function system of the file /apip.cgi of the component CGI Handler. Such manipulation of the argument ip leads to os command injection. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

A security vulnerability has been detected in Netcore NR289-GE 1.4.5102. The impacted element is the function system of the file /locationtime.cgi of the component Location Time Handler. The manipulation of the argument mac leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was detected in Netcore NR289-GE 1.4.5102. This affects the function system of the file /setntpserverip.cgi of the component CGI Handler. The manipulation of the argument ntpip results in os command injection. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A flaw has been found in Netcore NR289-GE 1.4.5102. This impacts the function processrequest of the component boatemp Handler. This manipulation causes missing authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Netcore NAP930 0.1.241010.141410. This affects the function eval of the file /www/cgi-bin/networktools of the component Network Tools CGI. The manipulation of the argument sid results in os command injection. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

A weakness has been identified in Netcore NR289-GE 1.4.5102. The affected element is the function password-check of the file /bin/boa of the component Authentication. Executing a manipulation of the argument Username can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in wakeupset.cgi caused by unbounded tokenization of MAC and ID input. Attackers can supply crafted MAC and ID values to the affected endpoint to overflow the stack buffer and corrupt program memory.

Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in ntoolstcpdumpstartset.cgi caused by an unsized sprintf call when processing form values. An attacker can submit crafted input to this cgi endpoint to overflow the stack buffer and potentially execute arbitrary code.

Netcore NR255-V firmware version 1.5.130703 builds root-run command lines from unquoted user-supplied DDNS input in DDNSsetcgi.c and related ddnsProc.c components, enabling os command argument injection. Attackers can exploit the unsanitized parameters to inject additional command arguments executed with root privileges.

A vulnerability has been found in Netcore NBR200V2 1.3.241127.071246. Affected by this vulnerability is an unknown functionality of the file /usr/bin/networktools of the component Traceroute Diagnostic Feature. The manipulation of the argument url leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Netcore NBR200V2 1.3.241127.071246. Affected by this issue is some unknown functionality of the file /usr/bin/networktools of the component LAN IP Configuration Handler. The manipulation of the argument ipv4 results in command injection. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

A weakness has been identified in Netcore NBR200V2 1.3.241127.071246. Impacted is the function wanconfigsetvlan of the file /usr/bin/routerd of the component WAN VLAN Reconfiguration. Executing a manipulation of the argument vlanwanX.ports can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

A security flaw has been discovered in Netcore NBR200V2 1.3.241127.071246. This issue affects some unknown processing of the file restore.cgi of the component Backup Restore. Performing a manipulation of the argument QUERYSTRING results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

A security vulnerability has been detected in Netcore NBR200V2 1.3.241127.071246. The affected element is the function vlanloadformuci of the file /usr/bin/routerd. The manipulation of the argument wannum leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A security flaw has been discovered in Netcore NBR200V2 1.3.241127.071246. Affected is the function system of the file /usr/bin/networktools of the component Tools Ping Handler. Performing a manipulation of the argument url results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was identified in Netcore NBR200V2 1.3.241127.071246. This vulnerability affects unknown code of the file /www/cgi-bin/upgrade of the component Firmware Upgrade CGI Endpoint. Such manipulation of the argument QUERYSTRING leads to command injection. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

An issue in Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router v1.3.241114.024540 and before allows a remote attacker to obtain sensitive information

A security flaw has been discovered in Netcore Power 15AX up to 3.0.0.6938. Affected by this issue is the function setTools of the file /bin/netis.cgi of the component Diagnostic Tool Interface. Performing a manipulation of the argument IpAddr results in os command injection. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in the audit endpoints handled by l7webauthlogdumpcgi.c, auditgetcgi.c, and moddispatchauth/plan.json. Attackers can query these audit components to obtain other users' session and browsing history data across sessions.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in the userpassshow.cgi component. Low-privilege attackers can exploit this flaw via uiconfig2.xml and misc.js to disclose router credentials.

Netcore NR255-V firmware version 1.5.130703 contains a sensitive information disclosure vulnerability in the ddnswanlistshow.cgi endpoint and related DDNSsetcgi, IGDGetCgiHandler, and IGDCgiCall components. Attackers who reach this CGI handler can obtain plaintext DDNS credentials, exposing sensitive account information.

NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in l2tpdconfigshowcgi.c, ipsecshowcgi.c, and modvpnremote/plan.json read handlers. Attackers can query l2tpdconfigshow.cgi to expose stored IPsec PSK and RSA key material.

Netcore NR255-V version 1.5.130703 contains an out-of-bounds read vulnerability in the mtdwrite pre-flash validation routine triggered by short firmware uploads. Attackers can upload a truncated firmware image via putfilecgi.c to trigger out-of-bounds reads across main.c, checkimageuuid.c, and oemMD5Update.c.

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in modvpnremote/plan.json, pptpdusershow.cgi, pptpclientconfigshow.cgi, and l2tpdusershow.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials.

Netcore NR255-V firmware version 1.5.130703 contains a cross-site request forgery vulnerability affecting the wanconfigsetcgi, wannumsetcgi, and lanipchangecgi endpoints. Attackers can craft forged requests to trick authenticated administrators into modifying WAN or LAN network configuration settings without consent.

Netcore NR255-V version 1.5.130703 contains a null pointer dereference vulnerability in the QoS setter CGI handlers filterconndelcgi.c and grepriosetcgi.c due to unchecked atoi() results. An attacker can trigger the flaw by supplying crafted input to these handlers, causing a denial of service.