Vulnerabilities > CVE-2009-2422 - Improper Authentication vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
The example code for the digest authentication functionality (http_authentication.rb) in Ruby on Rails before 2.3.3 defines an authenticate_or_request_with_http_digest block that returns nil instead of false when the user does not exist, which allows context-dependent attackers to bypass authentication for applications that are derived from this example by sending an invalid username without a password.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Authentication Abuse An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Utilizing REST's Trust in the System Resource to Register Man in the Middle This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
- Man in the Middle Attack This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-200912-02.NASL description The remote host is affected by the vulnerability described in GLSA-200912-02 (Ruby on Rails: Multiple vulnerabilities) The following vulnerabilities were discovered: sameer reported that lib/action_controller/cgi_process.rb removes the :cookie_only attribute from the default session options (CVE-2007-6077), due to an incomplete fix for CVE-2007-5380 (GLSA 200711-17). Tobias Schlottke reported that the :limit and :offset parameters of ActiveRecord::Base.find() are not properly sanitized before being processed (CVE-2008-4094). Steve from Coderrr reported that the CRSF protection in protect_from_forgery() does not parse the text/plain MIME format (CVE-2008-7248). Nate reported a documentation error that leads to the assumption that a block returning nil passed to authenticate_or_request_with_http_digest() would deny access to the requested resource (CVE-2009-2422). Brian Mastenbrook reported an input sanitation flaw, related to multibyte characters (CVE-2009-3009). Gabe da Silveira reported an input sanitation flaw in the strip_tags() function (CVE-2009-4214). Coda Hale reported an information disclosure vulnerability related to HMAC digests (CVE-2009-3086). Impact : A remote attacker could send specially crafted requests to a vulnerable application, possibly leading to the execution of arbitrary SQL statements or a circumvention of access control. A remote attacker could also conduct session fixation attacks to hijack a user last seen 2020-06-01 modified 2020-06-02 plugin id 43378 published 2009-12-22 reporter This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/43378 title GLSA-200912-02 : Ruby on Rails: Multiple vulnerabilities code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 200912-02. # # The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(43378); script_version("1.17"); script_cvs_date("Date: 2019/08/02 13:32:45"); script_cve_id("CVE-2007-5380", "CVE-2007-6077", "CVE-2008-4094", "CVE-2008-7248", "CVE-2009-2422", "CVE-2009-3009", "CVE-2009-3086", "CVE-2009-4214"); script_bugtraq_id(31176, 36278, 37142); script_xref(name:"GLSA", value:"200912-02"); script_name(english:"GLSA-200912-02 : Ruby on Rails: Multiple vulnerabilities"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-200912-02 (Ruby on Rails: Multiple vulnerabilities) The following vulnerabilities were discovered: sameer reported that lib/action_controller/cgi_process.rb removes the :cookie_only attribute from the default session options (CVE-2007-6077), due to an incomplete fix for CVE-2007-5380 (GLSA 200711-17). Tobias Schlottke reported that the :limit and :offset parameters of ActiveRecord::Base.find() are not properly sanitized before being processed (CVE-2008-4094). Steve from Coderrr reported that the CRSF protection in protect_from_forgery() does not parse the text/plain MIME format (CVE-2008-7248). Nate reported a documentation error that leads to the assumption that a block returning nil passed to authenticate_or_request_with_http_digest() would deny access to the requested resource (CVE-2009-2422). Brian Mastenbrook reported an input sanitation flaw, related to multibyte characters (CVE-2009-3009). Gabe da Silveira reported an input sanitation flaw in the strip_tags() function (CVE-2009-4214). Coda Hale reported an information disclosure vulnerability related to HMAC digests (CVE-2009-3086). Impact : A remote attacker could send specially crafted requests to a vulnerable application, possibly leading to the execution of arbitrary SQL statements or a circumvention of access control. A remote attacker could also conduct session fixation attacks to hijack a user's session or bypass the CSRF protection mechanism, or furthermore conduct Cross-Site Scripting attacks or forge a digest via multiple attempts. 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NASL family MacOS X Local Security Checks NASL id MACOSX_10_6_3.NASL description The remote host is running a version of Mac OS X 10.6.x that is prior to 10.6.3. Mac OS X 10.6.3 contains security fixes for the following products : - AFP Server - Apache - CoreAudio - CoreMedia - CoreTypes - CUPS - DesktopServices - Disk Images - Directory Services - Dovecot - Event Monitor - FreeRADIUS - FTP Server - iChat Server - ImageIO - Image RAW - Libsystem - Mail - MySQL - OS Services - Password Server - PHP - Podcast Producer - Preferences - PS Normalizer - QuickTime - Ruby - Server Admin - SMB - Tomcat - Wiki Server - X11 last seen 2020-06-01 modified 2020-06-02 plugin id 45372 published 2010-03-29 reporter This script is Copyright (C) 2010-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/45372 title Mac OS X 10.6.x < 10.6.3 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # if (!defined_func("bn_random")) exit(0); if (NASL_LEVEL < 3000) exit(0); include("compat.inc"); if (description) { script_id(45372); script_version("1.31"); script_cvs_date("Date: 2018/07/16 12:48:31"); script_cve_id( "CVE-2003-0063", "CVE-2006-1329", "CVE-2008-4456", "CVE-2008-5515", "CVE-2008-7247", "CVE-2009-0033", "CVE-2009-0580", "CVE-2009-0689", "CVE-2009-0781", "CVE-2009-0783", "CVE-2009-1904", "CVE-2009-2042", "CVE-2009-2417", "CVE-2009-2422", "CVE-2009-2446", "CVE-2009-2693", "CVE-2009-2901", "CVE-2009-2902", "CVE-2009-2906", "CVE-2009-3009", "CVE-2009-3095", "CVE-2009-3557", "CVE-2009-3558", "CVE-2009-3559", "CVE-2009-4017", "CVE-2009-4019", "CVE-2009-4030", "CVE-2009-4214", "CVE-2010-0041", "CVE-2010-0042", "CVE-2010-0043", "CVE-2010-0057", "CVE-2010-0059", "CVE-2010-0060", "CVE-2010-0062", "CVE-2010-0063", "CVE-2010-0064", "CVE-2010-0065", "CVE-2010-0393", "CVE-2010-0497", "CVE-2010-0498", "CVE-2010-0500", "CVE-2010-0501", "CVE-2010-0502", "CVE-2010-0504", "CVE-2010-0505", "CVE-2010-0507", "CVE-2010-0508", "CVE-2010-0509", "CVE-2010-0510", "CVE-2010-0511", "CVE-2010-0512", "CVE-2010-0513", "CVE-2010-0514", "CVE-2010-0515", "CVE-2010-0516", "CVE-2010-0517", "CVE-2010-0518", "CVE-2010-0519", "CVE-2010-0520", "CVE-2010-0521", "CVE-2010-0524", "CVE-2010-0525", "CVE-2010-0526", "CVE-2010-0533", "CVE-2010-0534", "CVE-2010-0535", "CVE-2010-0537" ); script_bugtraq_id( 6940, 17155, 31486, 35193, 35196, 35233, 35263, 35278, 35416, 35510, 35579, 35609, 36032, 36278, 36554, 36555, 36573, 37075, 37142, 37297, 37942, 37944, 37945, 38043, 38524, 38673, 38676, 38677, 39151, 39153, 39157, 39160, 39161, 39171, 39172, 39175, 39194, 39230, 39231, 39232, 39234, 39236, 39252, 39255, 39256, 39258, 39264, 39268, 39273, 39274, 39278, 39279, 39281, 39291 ); script_name(english:"Mac OS X 10.6.x < 10.6.3 Multiple Vulnerabilities"); script_summary(english:"Check the version of Mac OS X"); script_set_attribute( attribute:"synopsis", value: "The remote host is missing a Mac OS X update that fixes various security issues." ); script_set_attribute( attribute:"description", value: "The remote host is running a version of Mac OS X 10.6.x that is prior to 10.6.3. Mac OS X 10.6.3 contains security fixes for the following products : - AFP Server - Apache - CoreAudio - CoreMedia - CoreTypes - CUPS - DesktopServices - Disk Images - Directory Services - Dovecot - Event Monitor - FreeRADIUS - FTP Server - iChat Server - ImageIO - Image RAW - Libsystem - Mail - MySQL - OS Services - Password Server - PHP - Podcast Producer - Preferences - PS Normalizer - QuickTime - Ruby - Server Admin - SMB - Tomcat - Wiki Server - X11" ); script_set_attribute( attribute:"see_also", value:"http://support.apple.com/kb/HT4077" ); script_set_attribute( attribute:"see_also", value:"http://lists.apple.com/archives/security-announce/2010/Mar/msg00001.html" ); script_set_attribute( attribute:"see_also", value:"http://www.securityfocus.com/advisories/19364" ); script_set_attribute( attribute:"solution", value:"Upgrade to Mac OS X 10.6.3 or later." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_core", value:"true"); script_set_attribute(attribute:"exploited_by_malware", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack'); script_cwe_id(20, 22, 59, 79, 119, 134, 189, 200, 264, 287, 310); script_set_attribute(attribute:"vuln_publication_date", value:"2010/03/29"); script_set_attribute(attribute:"patch_publication_date", value:"2010/03/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2010/03/29"); script_set_attribute(attribute:"plugin_type", value:"combined"); script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"MacOS X Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2010-2018 Tenable Network Security, Inc."); script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl"); exit(0); } os = get_kb_item("Host/MacOSX/Version"); if (!os) { os = get_kb_item("Host/OS"); c = get_kb_item("Host/OS/Confidence"); if ( isnull(os) || c <= 70 ) exit(0); } if (!os) exit(1, "The 'Host/OS' KB item is missing."); if (ereg(pattern:"Mac OS X 10\.6($|\.[0-2]([^0-9]|$))", string:os)) security_hole(0); else exit(0, "The host is not affected as it is running "+os+".");
NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD2010-002.NASL description The remote host is running a version of Mac OS X 10.5 that does not have Security Update 2010-002 applied. This security update contains fixes for the following products : - AppKit - Application Firewall - AFP Server - Apache - ClamAV - CoreTypes - CUPS - curl - Cyrus IMAP - Cyrus SASL - Disk Images - Directory Services - Event Monitor - FreeRADIUS - FTP Server - iChat Server - Image RAW - Libsystem - Mail - Mailman - OS Services - Password Server - perl - PHP - PS Normalizer - Ruby - Server Admin - SMB - Tomcat - unzip - vim - Wiki Server - X11 - xar last seen 2020-06-01 modified 2020-06-02 plugin id 45373 published 2010-03-29 reporter This script is Copyright (C) 2010-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/45373 title Mac OS X Multiple Vulnerabilities (Security Update 2010-002) code # # (C) Tenable Network Security, Inc. # if (!defined_func("bn_random")) exit(0); if (NASL_LEVEL < 3000) exit(0); include("compat.inc"); if (description) { script_id(45373); script_version("1.29"); script_cvs_date("Date: 2018/07/16 12:48:31"); script_cve_id( "CVE-2003-0063", "CVE-2006-1329", "CVE-2008-0564", "CVE-2008-0888", "CVE-2008-2712", "CVE-2008-4101", "CVE-2008-5302", "CVE-2008-5303", "CVE-2008-5515", "CVE-2009-0033", "CVE-2009-0037", "CVE-2009-0316", "CVE-2009-0580", "CVE-2009-0688", "CVE-2009-0689", "CVE-2009-0781", "CVE-2009-0783", "CVE-2009-1904", "CVE-2009-2042", "CVE-2009-2417", "CVE-2009-2422", "CVE-2009-2632", "CVE-2009-2693", "CVE-2009-2801", "CVE-2009-2901", "CVE-2009-2902", "CVE-2009-2906", "CVE-2009-3009", "CVE-2009-3095", "CVE-2009-3557", "CVE-2009-3558", "CVE-2009-3559", "CVE-2009-4142", "CVE-2009-4143", "CVE-2009-4214", "CVE-2010-0041", "CVE-2010-0042", "CVE-2010-0055", "CVE-2010-0056", "CVE-2010-0057", "CVE-2010-0058", "CVE-2010-0063", "CVE-2010-0065", "CVE-2010-0393", "CVE-2010-0497", "CVE-2010-0498", "CVE-2010-0500", "CVE-2010-0501", "CVE-2010-0502", "CVE-2010-0503", "CVE-2010-0504", "CVE-2010-0505", "CVE-2010-0506", "CVE-2010-0507", "CVE-2010-0508", "CVE-2010-0509", "CVE-2010-0510", "CVE-2010-0513", "CVE-2010-0521", "CVE-2010-0522", "CVE-2010-0523", "CVE-2010-0524", "CVE-2010-0525", "CVE-2010-0533" ); script_bugtraq_id( 6940, 12767, 17155, 27630, 28288, 29715, 30795, 33447, 33962, 34961, 35193, 35196, 35233, 35263, 35278, 35416, 35510, 35579, 36032, 36278, 36296, 36377, 36554, 36555, 36573, 37142, 37389, 37390, 37942, 37944, 37945, 38524, 38676, 38677, 39151, 39156, 39157, 39169, 39170, 39171, 39172, 39175, 39194, 39231, 39232, 39234, 39245, 39252, 39255, 39256, 39264, 39268, 39273, 39274, 39277, 39279, 39281, 39289, 39290, 39292 ); script_name(english:"Mac OS X Multiple Vulnerabilities (Security Update 2010-002)"); script_summary(english:"Check for the presence of Security Update 2010-002"); script_set_attribute( attribute:"synopsis", value: "The remote host is missing a Mac OS X update that fixes various security issues." ); script_set_attribute( attribute:"description", value: "The remote host is running a version of Mac OS X 10.5 that does not have Security Update 2010-002 applied. This security update contains fixes for the following products : - AppKit - Application Firewall - AFP Server - Apache - ClamAV - CoreTypes - CUPS - curl - Cyrus IMAP - Cyrus SASL - Disk Images - Directory Services - Event Monitor - FreeRADIUS - FTP Server - iChat Server - Image RAW - Libsystem - Mail - Mailman - OS Services - Password Server - perl - PHP - PS Normalizer - Ruby - Server Admin - SMB - Tomcat - unzip - vim - Wiki Server - X11 - xar" ); script_set_attribute( attribute:"see_also", value:"http://support.apple.com/kb/HT4077" ); script_set_attribute( attribute:"see_also", value:"http://lists.apple.com/archives/security-announce/2010/Mar/msg00001.html" ); script_set_attribute( attribute:"see_also", value:"http://www.securityfocus.com/advisories/19364" ); script_set_attribute( attribute:"solution", value:"Install Security Update 2010-002 or later." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_core", value:"true"); script_set_attribute(attribute:"exploited_by_malware", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack'); script_cwe_id(20, 22, 79, 119, 189, 200, 264, 287, 310, 352, 362); script_set_attribute(attribute:"vuln_publication_date", value:"2010/03/29"); script_set_attribute(attribute:"patch_publication_date", value:"2010/03/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2010/03/29"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"MacOS X Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2010-2018 Tenable Network Security, Inc."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/MacOSX/packages", "Host/uname"); exit(0); } uname = get_kb_item("Host/uname"); if (!uname) exit(1, "The 'Host/uname' KB item is missing."); pat = "^.+Darwin.* ([0-9]+\.[0-9.]+).*$"; if (!ereg(pattern:pat, string:uname)) exit(1, "Can't identify the Darwin kernel version from the uname output ("+uname+")."); darwin = ereg_replace(pattern:pat, replace:"\1", string:uname); if (ereg(pattern:"^9\.[0-8]\.", string:darwin)) { packages = get_kb_item("Host/MacOSX/packages/boms"); if (!packages) exit(1, "The 'Host/MacOSX/packages/boms' KB item is missing."); if (egrep(pattern:"^com\.apple\.pkg\.update\.security\.(2010\.00[2-9]|201[1-9]\.[0-9]+)(\.leopard)?\.bom", string:packages)) exit(0, "The host has Security Update 2010-002 or later installed and therefore is not affected."); else security_hole(0); } else exit(0, "The host is running Darwin kernel version "+darwin+" and therefore is not affected.");
NASL family CGI abuses NASL id ROR_HTTP_DIGEST_BYPASS.NASL description The remote web server appears to use a version of Ruby on Rails that contains a vulnerability in its HTTP Digest authentication support. Specifically, the last seen 2020-06-01 modified 2020-06-02 plugin id 40334 published 2009-07-21 reporter This script is Copyright (C) 2009-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/40334 title Ruby on Rails HTTP Digest Authentication Bypass code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(40334); script_version("1.11"); script_cvs_date("Date: 2018/11/15 20:50:18"); script_cve_id("CVE-2009-2422"); script_bugtraq_id(35579); script_xref(name:"Secunia", value:"35702"); script_name(english:"Ruby on Rails HTTP Digest Authentication Bypass"); script_summary(english:"Tries to bypass authentication"); script_set_attribute(attribute:"synopsis", value: "The remote web server contains an application that is prone to an authentication bypass attack."); script_set_attribute(attribute:"description", value: "The remote web server appears to use a version of Ruby on Rails that contains a vulnerability in its HTTP Digest authentication support. Specifically, the 'authenticate_or_request_with_http_digest' function in 'lib/action_controller/http_authentication.rb' of the 'actionpack' gem does not treat a 'nil' response as an authentication failure but instead continues to compare that to the password supplied by the user. A remote attacker may be able to leverage this issue to gain access to a page protected using HTTP Digest authentication by sending as part of the request a nil username / password or any username and no password."); script_set_attribute( attribute:"see_also", value:"http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-23s#_=_" ); script_set_attribute( attribute:"see_also", value:"https://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest/" ); script_set_attribute(attribute:"solution", value: "Either edit the application to ensure that authentication blocks never return nil or upgrade to Rails 2.3.3."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(287); script_set_attribute(attribute:"vuln_publication_date", value:"2009/06/03"); script_set_attribute(attribute:"patch_publication_date", value:"2009/06/03"); script_set_attribute(attribute:"plugin_publication_date", value:"2009/07/21"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:rubyonrails:ruby_on_rails"); script_end_attributes(); script_category(ACT_ATTACK); script_family(english:"CGI abuses"); script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc."); script_dependencies("http_version.nasl", "webmirror.nasl"); script_exclude_keys("Settings/disable_cgi_scanning"); script_require_ports("Services/www", 80); exit(0); } include("global_settings.inc"); include("misc_func.inc"); include("http.inc"); port = get_http_port(default:80); # Loop through directories known to require authentication. urls = get_kb_list(strcat("www/", port, "/content/digest_auth/url/*")); if (isnull(urls)) exit(0, "No pages requiring digest authentication were found on port "+port); urls = make_list(urls); foreach url (urls) { # Make sure the page looks like RoR with HTTP Digest auth. res = http_send_recv3(method:"GET", item:url, port:port, exit_on_fail: 1); if ( res[0] =~ "^HTTP/1\.[01] 401 " && "HTTP Digest: Access denied." >< res[2] && egrep( pattern:'^WWW-Authenticate: *Digest realm="[^"]+", qop="[^"]+", algorithm=MD5, nonce="[^"]+", opaque="[^"]+"', string:res[1] ) ) { # Try to exploit the issue. req = http_mk_get_req(port:port, item:url); req = http_add_auth_to_req( req : req, headers : res[1], username : SCRIPT_NAME, password : "" ); res = http_send_recv_req(port:port, req:req, exit_on_fail: 1); # There's a problem if we're logged in. if(ereg(pattern:"^HTTP/[0-9]\.[0-9] 200 .*", string: res[0])) { security_hole(port); exit(0); } } } exit(0, "The web server on port "+port+" is not affected.");
References
- http://secunia.com/advisories/35702
- http://www.vupen.com/english/advisories/2009/1802
- http://www.securityfocus.com/bid/35579
- http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest
- http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://support.apple.com/kb/HT4077
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51528