Vulnerabilities > CVE-2012-3292 - Permissions, Privileges, and Access Controls vulnerability in Globus Toolkit

047910
CVSS 7.6 - HIGH
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
high complexity
globus
CWE-264
nessus

Summary

The GridFTP in Globus Toolkit (GT) before 5.2.2, when certain autoconf macros are defined, does not properly check the return value from the getpwnam_r function, which might allow remote attackers to gain privileges by logging in with a user that does not exist, which causes GridFTP to run as the last user in the password file.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Nessus

  • NASL familyFTP
    NASL idGT_GRIDFTP_6_11.NASL
    descriptionAccording to its self-reported version number, the remote FTP server is running a version of GridFTP Server earlier than 3.42 / 6.11. Such versions reportedly are affected by an authentication bypass vulnerability caused by incorrect use of
    last seen2020-06-01
    modified2020-06-02
    plugin id59734
    published2012-06-27
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/59734
    titleGlobus Toolkit GridFTP Server < 3.42 / 6.11 'getpwnam_r()' Authentication Bypass Vulnerability
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(59734);
      script_version("1.9");
      script_cvs_date("Date: 2019/12/04");
    
      script_cve_id("CVE-2012-3292");
      script_bugtraq_id(53778);
    
      script_name(english:"Globus Toolkit GridFTP Server < 3.42 / 6.11 'getpwnam_r()' Authentication Bypass Vulnerability");
      script_summary(english:"Checks version reported in FTP banner");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote FTP service is vulnerable to an authentication bypass
    attack.");
      script_set_attribute(attribute:"description", value:
    "According to its self-reported version number, the remote FTP server
    is running a version of GridFTP Server earlier than 3.42 / 6.11. Such
    versions reportedly are affected by an authentication bypass
    vulnerability caused by incorrect use of 'getpwnam_r()'. When a
    'gridmap' file is improperly configured with a valid user DN mapped to
    a nonexistent user account, the GridFTP server may grant access to the
    client under another account.");
      script_set_attribute(attribute:"see_also", value:"https://docs.globus.org/gt-jira-archive/#globus_toolkit_gt_195");
      script_set_attribute(attribute:"see_also", value:"https://lists.globus.org/pipermail/security-announce/2012-May/000019.html");
      script_set_attribute(attribute:"solution", value:
    "Upgrade to version 3.42 / 6.11 or later.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-3292");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2012/05/17");
      script_set_attribute(attribute:"patch_publication_date", value:"2012/05/17");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/27");
    
      script_set_attribute(attribute:"potential_vulnerability", value:"true");
      script_set_attribute(attribute:"plugin_type", value:"remote");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:globus:globus_toolkit");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"FTP");
    
      script_copyright(english:"This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("gt_gridftp_detect.nasl");
      script_require_keys("Globus_Toolkit/GridFTP/Installed", "Settings/ParanoidReport");
    
      exit(0);
    }
    
    include("audit.inc");
    include("ftp_func.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    
    app = "Globus Toolkit GridFTP Server";
    kb = "Globus_Toolkit/GridFTP/";
    
    if (report_paranoia < 2) audit(AUDIT_PARANOID);
    
    get_kb_item_or_exit(kb + "Installed");
    
    # Get the ports that FTP servers have been found on, defaulting to
    # what GridFTP uses in the provided configuration file.
    port = get_ftp_port(default:2811);
    
    # Get the information from the KB.
    kb += port + "/";
    banner = get_kb_item_or_exit(kb + "Banner");
    ver = get_kb_item_or_exit(kb + "Version");
    
    # Check if the installation is vulnerable.
    if (ver =~ "^[0-3]([^0-9]|$)")
      fix = "3.42";
    else
      fix = "6.11";
    
    if (ver_compare(ver:ver, fix:fix, strict:FALSE) >= 0)
      audit(AUDIT_LISTEN_NOT_VULN, app, port, ver);
    
    # Generate a security report.
    report = NULL;
    if (report_verbosity > 0)
    {
      report =
        '\n  Version source    : ' + banner +
        '\n  Installed version : ' + ver +
        '\n  Fixed version     : ' + fix +
        '\n';
    }
    
    security_hole(port:port, extra:report);
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2012-8461.NASL
    descriptionFix for http://jira.globus.org/browse/GT-195 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-17
    modified2012-06-04
    plugin id59348
    published2012-06-04
    reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/59348
    titleFedora 16 : globus-gridftp-server-6.10-2.fc16 / globus-gridftp-server-control-2.5-2.fc16 (2012-8461)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory 2012-8461.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(59348);
      script_version("1.9");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");
    
      script_cve_id("CVE-2012-3292");
      script_xref(name:"FEDORA", value:"2012-8461");
    
      script_name(english:"Fedora 16 : globus-gridftp-server-6.10-2.fc16 / globus-gridftp-server-control-2.5-2.fc16 (2012-8461)");
      script_summary(english:"Checks rpm output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Fix for http://jira.globus.org/browse/GT-195
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues."
      );
      # http://jira.globus.org/browse/GT-195
      script_set_attribute(
        attribute:"see_also",
        value:"https://docs.globus.org/gt-jira-archive/#globus_toolkit_gt_195"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2012-June/081791.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?0c53de8b"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2012-June/081792.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?b3e7f412"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Update the affected globus-gridftp-server and / or
    globus-gridftp-server-control packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:globus-gridftp-server");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:globus-gridftp-server-control");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:16");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2012/05/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/04");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^16([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 16.x", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
    
    flag = 0;
    if (rpm_check(release:"FC16", reference:"globus-gridftp-server-6.10-2.fc16")) flag++;
    if (rpm_check(release:"FC16", reference:"globus-gridftp-server-control-2.5-2.fc16")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "globus-gridftp-server / globus-gridftp-server-control");
    }
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2523.NASL
    descriptionIt was discovered that the GridFTP component from the Globus Toolkit, a toolkit used for building Grid systems and applications, performed insufficient validation of a name lookup, which could lead to privilege escalation.
    last seen2020-03-17
    modified2012-08-07
    plugin id61439
    published2012-08-07
    reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/61439
    titleDebian DSA-2523-1 : globus-gridftp-server - programming error
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2012-8488.NASL
    descriptionFix for http://jira.globus.org/browse/GT-195 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-17
    modified2012-06-04
    plugin id59351
    published2012-06-04
    reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/59351
    titleFedora 15 : globus-gridftp-server-6.10-2.fc15 / globus-gridftp-server-control-2.5-2.fc15 (2012-8488)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2012-8445.NASL
    descriptionFix for http://jira.globus.org/browse/GT-195 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-17
    modified2012-06-04
    plugin id59347
    published2012-06-04
    reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/59347
    titleFedora 17 : globus-gridftp-server-6.10-2.fc17 / globus-gridftp-server-control-2.5-2.fc17 (2012-8445)