Vulnerabilities > CVE-2012-1968 - Permissions, Privileges, and Access Controls vulnerability in Mozilla Bugzilla

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
mozilla
CWE-264
nessus

Summary

Bugzilla 4.1.x and 4.2.x before 4.2.2 and 4.3.x before 4.3.2 uses bug-editor privileges instead of bugmail-recipient privileges during construction of HTML bugmail documents, which allows remote attackers to obtain sensitive description information by reading the tooltip portions of an HTML e-mail message.

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 familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_58253655D82C11E1907C20CF30E32F6D.NASL
    descriptionA Bugzilla Security Advisory reports : The following security issues have been discovered in Bugzilla : Information Leak Versions: 4.1.1 to 4.2.1, 4.3.1 In HTML bugmails, all bug IDs and attachment IDs are linkified, and hovering these links displays a tooltip with the bug summary or the attachment description if the user is allowed to see the bug or attachment. But when validating user permissions when generating the email, the permissions of the user who edited the bug were taken into account instead of the permissions of the addressee. This means that confidential information could be disclosed to the addressee if the other user has more privileges than the addressee. Plain text bugmails are not affected as bug and attachment IDs are not linkified. Information Leak Versions: 2.17.5 to 3.6.9, 3.7.1 to 4.0.6, 4.1.1 to 4.2.1, 4.3.1 The description of a private attachment could be visible to a user who hasn
    last seen2020-06-01
    modified2020-06-02
    plugin id60151
    published2012-07-30
    reporterThis script is Copyright (C) 2012-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/60151
    titleFreeBSD : bugzilla -- multiple vulnerabilities (58253655-d82c-11e1-907c-20cf30e32f6d)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from the FreeBSD VuXML database :
    #
    # Copyright 2003-2018 Jacques Vidrine and contributors
    #
    # Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
    # HTML, PDF, PostScript, RTF and so forth) with or without modification,
    # are permitted provided that the following conditions are met:
    # 1. Redistributions of source code (VuXML) must retain the above
    #    copyright notice, this list of conditions and the following
    #    disclaimer as the first lines of this file unmodified.
    # 2. Redistributions in compiled form (transformed to other DTDs,
    #    published online in any format, converted to PDF, PostScript,
    #    RTF and other formats) must reproduce the above copyright
    #    notice, this list of conditions and the following disclaimer
    #    in the documentation and/or other materials provided with the
    #    distribution.
    # 
    # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
    # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
    # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
    # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
    # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
    # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
    # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
    # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(60151);
      script_version("1.4");
      script_cvs_date("Date: 2018/11/10 11:49:43");
    
      script_cve_id("CVE-2012-1968", "CVE-2012-1969");
    
      script_name(english:"FreeBSD : bugzilla -- multiple vulnerabilities (58253655-d82c-11e1-907c-20cf30e32f6d)");
      script_summary(english:"Checks for updated packages in pkg_info output");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote FreeBSD host is missing one or more security-related
    updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "A Bugzilla Security Advisory reports : The following security issues
    have been discovered in Bugzilla : Information Leak Versions: 4.1.1 to
    4.2.1, 4.3.1
    
    In HTML bugmails, all bug IDs and attachment IDs are linkified, and
    hovering these links displays a tooltip with the bug summary or the
    attachment description if the user is allowed to see the bug or
    attachment. But when validating user permissions when generating the
    email, the permissions of the user who edited the bug were taken into
    account instead of the permissions of the addressee. This means that
    confidential information could be disclosed to the addressee if the
    other user has more privileges than the addressee. Plain text bugmails
    are not affected as bug and attachment IDs are not linkified.
    Information Leak Versions: 2.17.5 to 3.6.9, 3.7.1 to 4.0.6, 4.1.1 to
    4.2.1, 4.3.1
    
    The description of a private attachment could be visible to a user who
    hasn't permissions to access this attachment if the attachment ID is
    mentioned in a public comment in a bug that the user can see."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.mozilla.org/show_bug.cgi?id=777398"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.mozilla.org/show_bug.cgi?id=777586"
      );
      # https://vuxml.freebsd.org/freebsd/58253655-d82c-11e1-907c-20cf30e32f6d.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?e33adba8"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:bugzilla");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2012/07/26");
      script_set_attribute(attribute:"patch_publication_date", value:"2012/07/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/07/30");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2012-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"FreeBSD Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("freebsd_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
    if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (pkg_test(save_report:TRUE, pkg:"bugzilla>=3.6.0<3.6.10")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"bugzilla>=4.0.0<4.0.7")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"bugzilla>=4.2.0<4.2.2")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyCGI abuses
    NASL idBUGZILLA_3_6_10.NASL
    descriptionAccording to its banner, the version of Bugzilla installed on the remote host is affected by multiple information disclosure vulnerabilities : - In HTML bugmails, all bug IDs and attachment IDs are linkified, and hovering these links displays a tooltip with the bug summary or the attachment description if the user is allowed to see the bug or attachment. But when validating user permissions when generating the email, the permissions of the user who edited the bug were taken into account instead of the permissions of the addressee. This means that confidential information could be disclosed to the addressee if the other user has more privileges than the addressee. (CVE-2012-1968) - The description of a private attachment could be visible to a user without permissions to access the attachment if the attachment ID is mentioned in a public comment that the user can see. (CVE-2012-1969) Note that Nessus has not tested for these issues but has instead relied only on the application
    last seen2020-06-01
    modified2020-06-02
    plugin id61650
    published2012-08-23
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/61650
    titleBugzilla < 3.6.10 / 4.0.7 / 4.2.2 / 4.3.2 Multiple Information Disclosures