DATAC RealWin – Multiple Vulnerabilities
Sources: http://aluigi.org/adv/realwin_2-adv.txt http://aluigi.org/adv/realwin_3-adv.txt http://aluigi.org/adv/realwin_4-adv.txt http://aluigi.org/adv/realwin_5-adv.txt http://aluigi.org/adv/realwin_6-adv.txt http://aluigi.org/adv/realwin_7-adv.txt http://aluigi.org/adv/realwin_8-adv.txt Advisory Archive: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-adv.tar.gz (datac_realwin_adv.tar.gz) PoC Archive: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-poc.tar.tz (datac_realwin_poc.tar.gz) ####################################################################### Luigi Auriemma Application: DATAC RealWin http://www.dataconline.com/software/realwin.php http://www.realflex.com Versions: <= 2.1 (Build 6.1.10.10) Platforms: Windows Date: 21 Mar 2011 (found 25 Nov 2010) Author: Luigi Auriemma e-mail: aluigi@autistici.org web: aluigi.org =============== Introduction =============== "RealWin is a SCADA server package for medium / small applications." ####################################################################### Remote Stack Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to a buffer overflow happening in the function 004be510 that splits the input strings using some delimiters passed by the callee functions and copies them in a stack buffer of 1024 bytes. One of the ways to exploit the vulnerability in that function is through an On_FC_CONNECT_FCS_LOGIN packet containing a long username. ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_2.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-2.zip (realwin_2.zip) nc SERVER 910 < realwin_2.dat ####################################################################### Remote Stack Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to some buffer overflows happening during the handling of the On_FC_CTAGLIST_FCS_CADDTAG, On_FC_CTAGLIST_FCS_CDELTAG and On_FC_CTAGLIST_FCS_ADDTAGMS packets where the input strings are copied in a stack buffer of 1024 bytes. The bugs are located in different functions but I have grouped them in this same advisory because the format and the performed operations are similar. List of the vulnerable functions: - realwin_3a: 0042f770 - realwin_3b: 0042f670 - realwin_3c: 0042f9c0 ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_3.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-3.zip (realwin_3.zip) nc SERVER 910 < realwin_3?.dat ####################################################################### Remote Stack Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to a buffer overflow happening during the handling of the On_FC_RFUSER_FCS_LOGIN packet by the function 00437500 where the input username is copied in a stack buffer of 44 bytes. ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_4.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-4.zip (realwin_4.zip) nc SERVER 910 < realwin_4.dat ####################################################################### Remote Stack Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to some buffer overflows happening during the handling of various On_FC_BINFILE_FCS_*FILE packets in which is available a string containing a filename used for performing some operations. This filename is appended in a stack buffer of 256 bytes for building the full path of a file through function 004275b0 causing the overflow. The bugs are located in different functions but I have grouped them in this same advisory because the format and the performed operations are similar. List of the vulnerable functions: - realwin_5a: 0042f770 - realwin_5b: 0042f670 - realwin_5c: 0042f9c0 -> 0042f770 - realwin_5d: 00427790 - realwin_5e: 004280b0 - realwin_5f: 00427880 ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_5.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-5.zip (realwin_5.zip) nc SERVER 910 < realwin_5?.dat ####################################################################### Remote Integer Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to some buffer overflows happening during the handling of the On_FC_MISC_FCS_MSGBROADCAST and On_FC_MISC_FCS_MSGSEND packets where is allocated an amount of memory equal to the 32bit size value provided by the client plus 0x16 resulting in a heap overflow during the subsequent copy of the input data. The bugs are located in different functions but I have grouped them in this same advisory because the format and the performed operations are enough similar (the main difference is the presence of the 16bit value at offset 0x12 of On_FC_MISC_FCS_MSGSEND). List of the vulnerable functions: - realwin_6a: 004326f0 - realwin_6b: 00432ae0 ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_6.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-6.zip (realwin_6.zip) nc SERVER 910 < realwin_6?.dat ####################################################################### Remote Stack Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to a buffer overflow happening during the handling of the On_FC_CGETTAG_FCS_GETTELEMETRY, On_FC_CGETTAG_FCS_GETCHANNELTELEMETRY, On_FC_CGETTAG_FCS_SETTELEMETRY and On_FC_CGETTAG_FCS_SETCHANNELTELEMETRY packets where the input string is used for building a file path on a stack buffer of about 200 bytes: sprintf( stack_buffer, "C:\\Program Files\\DATAC\\Real.Win\\DemoRW-1.06\\\\realflex\\data\\crt\\fwd\\tel\\%s.tel", input_string); Note that the bugs are located in different functions but I have grouped them here because the format and the performed operations are similar. List of the vulnerable functions: - realwin_7a: 00467050 - realwin_7b: 00467520 - realwin_7c: 00467860 - realwin_7d: 00467ce0 ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_7.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-7.zip (realwin_7.zip) nc SERVER 910 < realwin_7?.dat ####################################################################### Remote Stack Overflow: ====== Bug ====== The part of the server listening on port 910 is vulnerable to a buffer overflow happening during the handling of the On_FC_SCRIPT_FCS_STARTPROG packets by the function 00439620 where the input string is copied in a stack buffer of about 4 kilobytes. ####################################################################### =========== The Code =========== http://aluigi.org/poc/realwin_8.zip https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/17025-8.zip (realwin_8.zip) nc SERVER 910 < realwin_8.dat ####################################################################### ====== Fix ====== No fix. ####################################################################### |