A weakness has been identified in Linksys WRT54GL 4.30.18. The affected element is the function system of the file apply.cgi of the component Ping Diagnostic. This manipulation of the argument pingip causes os command injection. The attack can be initiated 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. This vulnerability only affects products that are no longer supported by the maintainer.

A security vulnerability has been detected in Linksys WRT54GL 4.30.18. The impacted element is the function system of the file apply.cgi of the component Traceroute Diagnostic Function. Such manipulation of the argument tracerouteip leads to os command injection. The attack can be launched 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. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was detected in Linksys E5350 1.0.00.037. This affects the function system of the file /wizard/apply.cgi. Performing a manipulation of the argument pingip/tracerouteip results in os command injection. The attack may be initiated 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 Linksys E5350 1.0.00.037. This impacts the function savesettings of the file /wizard/apply.cgi of the component Setup Wizard. Executing a manipulation of the argument wizardrouterpwd can lead to missing authentication. The attack may be launched 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 determined in Linksys E5600 1.1.0.26. Affected is an unknown function of the file /cgi-bin/meshlogin.cgi of the component Login Handler. Executing a manipulation can lead to improper authentication. The attack can be launched 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. This vulnerability only affects products that are no longer supported by the maintainer.

A vulnerability was identified in Linksys E5600 1.1.0.26. Affected by this vulnerability is the function strcpy of the file /cgi-bin/meshlogin.cgi of the component JSON Request Parser. The manipulation of the argument username/password/token/source/cn/action leads to out-of-bounds write. The attack may be initiated 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. This vulnerability only affects products that are no longer supported by the maintainer.

A security flaw has been discovered in Linksys E5600 1.1.0.26. Affected by this issue is the function initmultipart of the file /cgi-bin/uploadfw.cgi of the component Header Parser. The manipulation results in out-of-bounds write. The attack may be launched 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. This vulnerability only affects products that are no longer supported by the maintainer.

A weakness has been identified in Linksys E5600 1.1.0.26. This affects an unknown part of the file /cgi-bin/fqc.cgi of the component Factory Quality Control. This manipulation causes information disclosure. Remote exploitation of the attack is possible. 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. This vulnerability only affects products that are no longer supported by the maintainer.

Linksys WAG200G through 1.01.06 contains an OS command injection vulnerability that allows authenticated attackers to execute commands by injecting backtick-delimited input into the timerinterval parameter. Attackers can send a crafted POST request to setup.cgi to start telnetd or download and run a backdoor, gaining full device control.

An unauthenticated command injection vulnerability exists in the StartEPI function of the httpd binary on Linksys E1200 v2 routers (Firmware E1200v2.0.11.001us.tar.gz). The vulnerability occurs because user-supplied CGI parameters (wlant, wlssid, wlrate, ttcpnum, ttcpip, ttcpsize) are concatenated into system command strings without proper sanitization and executed via wlexeccmd. Successful exploitation allows remote attackers to execute arbitrary commands on the device without authentication.

A stack-based buffer overflow exists in the getmergeipaddr function of the httpd binary on Linksys E1200 v2 routers (Firmware E1200v2.0.11.001us.tar.gz). The function concatenates up to four user-supplied CGI parameters matching <parameter>0~3 into a fixed-size buffer (a2) without bounds checking. Remote attackers can exploit this vulnerability via specially crafted HTTP requests to execute arbitrary code or cause denial of service without authentication.

A stack-based buffer overflow vulnerability exists in the makeRequest.cgi binary of Linksys RE7000 routers (Firmware FWv2.0.152112301012). The arplookup function parses lines from /proc/net/arp using sscanf("%16s ... %18s ..."), storing results into buffers v6 (12 bytes) and v7 (20 bytes). Since the format specifiers allow up to 16 and 18 bytes respectively, oversized input can overflow the buffers, resulting in stack corruption. Local attackers controlling /proc/net/arp contents can exploit this issue to cause denial of service or potentially execute arbitrary code.

A stack-based buffer overflow exists in the httpd binary of Linksys E1200 v2 routers (Firmware E1200v2.0.11.001us.tar.gz). The applycgi and blockcgi functions copy user-supplied input from the "url" CGI parameter into stack buffers (v36, v29) using sprintf without bounds checking. Because these buffers are allocated as single-byte variables, any non-empty input will trigger a buffer overflow. Remote attackers can exploit this vulnerability via crafted HTTP requests to execute arbitrary code or cause denial of service without authentication.

A stack-based buffer overflow vulnerability exists in the libshared.so library of Cisco Linksys E1200 v2 routers (Firmware E1200v2.0.11.001us.tar.gz). The functions getmacfromip and getipfrommac use sscanf with overly permissive "%100s" format specifiers to parse entries from /proc/net/arp into fixed-size buffers (v6: 50 bytes, v7 sub-arrays: 50 bytes). This allows local attackers controlling the contents of /proc/net/arp to overflow stack buffers, leading to memory corruption, denial of service, or potential arbitrary code execution.

A stack-based buffer overflow vulnerability exists in the mtkdut binary of Linksys E7350 routers (Firmware 1.1.00.032). The function sub4045A8 reads up to 256 bytes from /sys/class/net/%s/address into a local buffer and then copies it into caller-provided buffer a1 using strcpy without boundary checks. Since a1 is often allocated with significantly smaller sizes (20-32 bytes), local attackers controlling the contents of /sys/class/net/%s/address can trigger buffer overflows, leading to memory corruption, denial of service, or potential arbitrary code execution.

A stack-based buffer overflow exists in the validatestaticroute function of the httpd binary on Linksys E1200 v2 routers (Firmware E1200v2.0.11.001us.tar.gz). The function improperly concatenates user-supplied CGI parameters (routeipaddr0~3, routenetmask0~3, routegateway0~3) into fixed-size buffers (v6, v10, v14) without proper bounds checking. Remote attackers can exploit this vulnerability via specially crafted HTTP requests to execute arbitrary code or cause denial of service without authentication.

A stack-based buffer overflow exists in the getmergemac function of the httpd binary on Linksys E1200 v2 routers (Firmware E1200v2.0.11.001us.tar.gz). The function concatenates up to six user-supplied CGI parameters matching <parameter>0~5 into a fixed-size buffer (a2) without proper bounds checking, appending colon delimiters during concatenation. Remote attackers can exploit this vulnerability via specially crafted HTTP requests to execute arbitrary code or cause denial of service without authentication.

Linksys E5600 V1.1.0.26 is vulnerable to command injection in the runtime.macClone function via the mc.ip parameter.

Linksys WAG200G through 1.01.06 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject scripts via the policyname parameter in setup.cgi. Attackers can save a malicious policy name from the AccessRes.htm page that executes in administrators' browsers when viewing the Status > Wireless page.

Linksys WAG200G through 1.01.06 contains a weak password change mechanism that allows attackers to change the administrator password without supplying the current password. Attackers with access to an authenticated administrator browser session can set a new password to lock out the legitimate administrator and take persistent device control.

A vulnerability was identified in Linksys E8450 1.2.00.360516. Affected is the function strcpy of the file /www/cgi-bin/portal.cgi. Such manipulation of the argument hiddentimezone leads to stack-based buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.

linksys E5600 V1.1.0.26 is vulnerable to command injection in the function ddnsStatus.

A vulnerability has been found in Linksys RE6250 1.0.04.001. This affects the function strcmp of the component Web Management Interface. The manipulation of the argument sessionid leads to insufficiently random values. The attack may be initiated remotely. The complexity of an attack is rather high. It is indicated that the exploitability is difficult. The exploit has been disclosed to the public and may be used.

A vulnerability was determined in Linksys E1700 1.0.0.4.003. This vulnerability affects the function ssid1MACFilter of the file /goform/ssid1MACFilter of the component Mac Filter. This manipulation of the argument newaptext%d causes stack-based buffer overflow. The attack may be initiated 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 found in Linksys E1700 1.0.0.4.003. This affects the function setLinksysIpv6 of the file /goform/setLinksysIpv6. The manipulation of the argument 6rdprefix/6rdprefixlen results in os command injection. The attack can 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 security flaw has been discovered in Linksys E1700 1.0.0.4.003. Impacted is the function addStaticRoute of the file /goform/addStaticRoute of the component Static Route Handler. Performing a manipulation of the argument staticRouteIPsetting/staticRouteNetmasksetting/staticRouteGatewaysetting/staticRouteMetricsetting 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.

A vulnerability was identified in Linksys E1700 up to 1.0.0.4.003. This issue affects the function setVlan of the file /goform/setVlan. Such manipulation of the argument vlanset leads to stack-based buffer overflow. The attack may 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 weakness has been identified in Linksys E1700 1.0.0.4.003. The affected element is the function setDMZ of the file /goform/setDMZ. Executing a manipulation of the argument MACaddr can lead to os command injection. The attack can be executed 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.

SNMP service in Atmel 802.11b VNET-B Access Point 1.3 and earlier, as used in Netgear ME102 and Linksys WAP11, accepts arbitrary community strings with requested MIB modifications, which allows remote attackers to obtain sensitive information such as WEP keys, cause a denial of service, or gain access to the network.

Linksys EtherFast BEFN2PS4, BEFSR41, and BEFSR81 Routers, and possibly other products, allow remote attackers to gain sensitive information and cause a denial of service via an SNMP query for the default community string "public," which causes the router to change its configuration and send SNMP trap information back to the system that initiated the query.