Vulnerabilities > CVE-2017-2613 - Cross-Site Request Forgery (CSRF) vulnerability in Jenkins

047910
CVSS 5.4 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
LOW
Availability impact
LOW
network
low complexity
jenkins
CWE-352
nessus
NVD
Published: 2018-05-15
Updated: 2019-10-09

Summary

jenkins before versions 2.44, 2.32.2 is vulnerable to a user creation CSRF using GET by admins. While this user record was only retained until restart in most cases, administrators' web browsers could be manipulated to create a large number of user records (SECURITY-406).

Vulnerable Configurations

Part Description Count
Application
Jenkins
1511

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • JSON Hijacking (aka JavaScript Hijacking)
    An attacker targets a system that uses JavaScript Object Notation (JSON) as a transport mechanism between the client and the server (common in Web 2.0 systems using AJAX) to steal possibly confidential information transmitted from the server back to the client inside the JSON object by taking advantage of the loophole in the browser's Same Origin Policy that does not prohibit JavaScript from one website to be included and executed in the context of another website. An attacker gets the victim to visit his or her malicious page that contains a script tag whose source points to the vulnerable system with a URL that requests a response from the server containing a JSON object with possibly confidential information. The malicious page also contains malicious code to capture the JSON object returned by the server before any other processing on it can take place, typically by overriding the JavaScript function used to create new objects. This hook allows the malicious code to get access to the creation of each object and transmit the possibly sensitive contents of the captured JSON object to the attackers' server. There is nothing in the browser's security model to prevent the attackers' malicious JavaScript code (originating from attacker's domain) to set up an environment (as described above) to intercept a JSON object response (coming from the vulnerable target system's domain), read its contents and transmit to the attackers' controlled site. The same origin policy protects the domain object model (DOM), but not the JSON.
  • Cross-Domain Search Timing
    An attacker initiates cross domain HTTP / GET requests and times the server responses. The timing of these responses may leak important information on what is happening on the server. Browser's same origin policy prevents the attacker from directly reading the server responses (in the absence of any other weaknesses), but does not prevent the attacker from timing the responses to requests that the attacker issued cross domain. For GET requests an attacker could for instance leverage the "img" tag in conjunction with "onload() / onerror()" javascript events. For the POST requests, an attacker could leverage the "iframe" element and leverage the "onload()" event. There is nothing in the current browser security model that prevents an attacker to use these methods to time responses to the attackers' cross domain requests. The timing for these responses leaks information. For instance, if a victim has an active session with their online e-mail account, an attacker could issue search requests in the victim's mailbox. While the attacker is not able to view the responses, based on the timings of the responses, the attacker could ask yes / no questions as to the content of victim's e-mails, who the victim e-mailed, when, etc. This is but one example; There are other scenarios where an attacker could infer potentially sensitive information from cross domain requests by timing the responses while asking the right questions that leak information.
  • Cross Site Identification
    An attacker harvests identifying information about a victim via an active session that the victim's browser has with a social networking site. A victim may have the social networking site open in one tab or perhaps is simply using the "remember me" feature to keep his or her session with the social networking site active. An attacker induces a payload to execute in the victim's browser that transparently to the victim initiates a request to the social networking site (e.g., via available social network site APIs) to retrieve identifying information about a victim. While some of this information may be public, the attacker is able to harvest this information in context and may use it for further attacks on the user (e.g., spear phishing). In one example of an attack, an attacker may post a malicious posting that contains an image with an embedded link. The link actually requests identifying information from the social networking site. A victim who views the malicious posting in his or her browser will have sent identifying information to the attacker, as long as the victim had an active session with the social networking site. There are many other ways in which the attacker may get the payload to execute in the victim's browser mainly by finding a way to hide it in some reputable site that the victim visits. The attacker could also send the link to the victim in an e-mail and trick the victim into clicking on the link. This attack is basically a cross site request forgery attack with two main differences. First, there is no action that is performed on behalf of the user aside from harvesting information. So standard CSRF protection may not work in this situation. Second, what is important in this attack pattern is the nature of the data being harvested, which is identifying information that can be obtained and used in context. This real time harvesting of identifying information can be used as a prelude for launching real time targeted social engineering attacks on the victim.
  • Cross Site Request Forgery (aka Session Riding)
    An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.

Nessus

  • NASL familyCGI abuses
    NASL idJENKINS_SECURITY_ADVISORY_2017-02-01.NASL
    descriptionThe remote web server hosts a version of Jenkins that is prior to 2.44, or a version of Jenkins LTS prior to 2.32.2, or else a version of Jenkings Opertations Center that is 1.625.x.y prior to 1.625.22.1, 2.7.x.0.y prior to 2.7.22.0.1, or 2.x.y.x prior to 2.32.2.1, or else a version of Jenkins Enterprise that is 1.651.x.y prior to 1.651.22.1, 2.7.x.0.y prior to 2.7.22.0.1, or 2.x.y.z prior to 2.32.2.1. It is, therefore, affected by the following vulnerabilities : - A DOM-based cross-site scripting (XSS) vulnerability exists in jQuery Core due to improper validation of certain tags while being rendered using innerHTML. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary script code in the user
    last seen2020-06-01
    modified2020-06-02
    plugin id97609
    published2017-03-08
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/97609
    titleJenkins < 2.44 / 2.32.x < 2.32.2, Jenkins Operations Center < 1.625.22.1 / 2.7.22.0.1 / 2.32.2.1, and Jenkins Enterprise < 1.651.22.1 / 2.7.22.0.1 / 2.32.2.1 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(97609);
  script_version("1.11");
  script_cvs_date("Date: 2019/06/10 11:30:32");

  script_cve_id(
    "CVE-2011-4969",
    "CVE-2015-0886",
    "CVE-2016-9887",
    "CVE-2017-2598",
    "CVE-2017-2599",
    "CVE-2017-2600",
    "CVE-2017-2601",
    "CVE-2017-2602",
    "CVE-2017-2603",
    "CVE-2017-2604",
    "CVE-2017-2605",
    "CVE-2017-2606",
    "CVE-2017-2607",
    "CVE-2017-2608",
    "CVE-2017-2609",
    "CVE-2017-2610",
    "CVE-2017-2611",
    "CVE-2017-2612",
    "CVE-2017-2613",
    "CVE-2017-1000362"
  );
  script_bugtraq_id(
    58458,
    95948,
    95949,
    95951,
    95952,
    95953,
    95954,
    95955,
    95956,
    95957,
    95959,
    95960,
    95961,
    95962,
    95963,
    95964,
    95967
  );

  script_name(english:"Jenkins < 2.44 / 2.32.x < 2.32.2, Jenkins Operations Center < 1.625.22.1 / 2.7.22.0.1 / 2.32.2.1, and Jenkins Enterprise < 1.651.22.1 / 2.7.22.0.1 / 2.32.2.1 Multiple Vulnerabilities");
  script_summary(english:"Checks the Jenkins version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server hosts a job scheduling and management system
that is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote web server hosts a version of Jenkins that is prior to
2.44, or a version of Jenkins LTS prior to 2.32.2, or else a version
of Jenkings Opertations Center that is 1.625.x.y prior to 1.625.22.1,
2.7.x.0.y prior to 2.7.22.0.1, or 2.x.y.x prior to 2.32.2.1, or else a
version of Jenkins Enterprise that is 1.651.x.y prior to 1.651.22.1,
2.7.x.0.y prior to 2.7.22.0.1, or 2.x.y.z prior to 2.32.2.1. It is,
therefore, affected by the following vulnerabilities :

  - A DOM-based cross-site scripting (XSS) vulnerability
    exists in jQuery Core due to improper validation of
    certain tags while being rendered using innerHTML. An
    unauthenticated, remote attacker can exploit this, via
    a specially crafted request, to execute arbitrary script
    code in the user's browser session. (CVE-2011-4969)

  - An integer overflow condition exists in jBCrypt in the
    key stretching implementation in gensalt, within the
    crypt_raw() function, which is triggered when the
    'log_rounds' parameter is set to the maximum value (31).
    An unauthenticated, remote attacker can exploit this to
    cause log_rounds to perform zero rounds, allowing a
    brute-force attack to more easily determine the password
    hash. (CVE-2015-0886)

  - A cross-site request forgery vulnerability (XSRF) exists
    due to several URLs related to group and role management
    not requiring POST form submission. An unauthenticated,
    remote attacker can exploit this to create unused roles,
    delete unused roles, and set group descriptions. Note
    that only Jenkins Enterprise is affected by this issue.
    (CVE-2016-9887)

  - A flaw exists when sensitive data, such as passwords, is
    encrypted using AES-128 with electronic codebook mode
    (ECB). An authenticated, remote attacker can exploit
    this to disclose information about reused passwords.
    (CVE-2017-2598)

  - An unspecified flaw exists that is triggered when
    handling new items due to insufficient permission
    checks. An authenticated, remote attacker can exploit
    this, by using the name of an already existing item, to
    create a new item that overwrites the existing item or
    to gain access to related objects. (CVE-2017-2599)

  - An information disclosure vulnerability exists due to
    improper permissions being set for accessing node
    monitor data via the remote API. An authenticated,
    remote attacker can exploit this to disclose system
    configuration and runtime information. (CVE-2017-2600)

  - A stored cross-site scripting (XSS) vulnerability exists
    due to improper validation of input to names and
    descriptions fields before returning it to users. An
    authenticated, remote attacker can exploit this, via a
    specially crafted request, to execute arbitrary script
    code in a user's browser session. (CVE-2017-2601)

  - A flaw exists in the Agent-to-Master Security Subsystem
    because build metadata from the Pipeline suite is not
    properly blacklisted. An authenticated, remote attacker
    can exploit this to overwrite metadata files.
    (CVE-2017-2602)

  - A flaw exists in the config.xml API when handling
    user-initiated agent disconnects, which results in User
    objects being included in the agent API output. An
    authenticated, remote attacker can exploit this to
    disclose sensitive information (e.g., user API tokens).
    (CVE-2017-2603)

  - A flaw exists when handling permissions for
    administrative monitors that allows an authenticated,
    remote attacker to access certain provided actions.
    (CVE-2017-2604)

  - A flaw exists in the Re-Key Admin Monitor when
    re-encrypting secrets with a new key that results in old
    secrets, including the encryption key, being stored
    with world-readable permissions. A local attacker can
    exploit this to disclose sensitive information from the
    backup files. (CVE-2017-2605)

  - A flaw exists in the internal API, specifically within
    the Jenkins::getItems() function, when requesting a list
    of items via UnprotectedRootAction. An authenticated,
    remote attacker can exploit this to disclose information
    regarding otherwise restricted items. (CVE-2017-2606)

  - A stored cross-site scripting (XSS) vulnerability exists
    due to improper validation of input passed via
    serialized console notes before returning it to users in
    build logs. An authenticated, remote attacker can
    exploit this, via a specially crafted request, to
    execute arbitrary script code in a user's browser
    session. (CVE-2017-2607)

  - A flaw exists in the XStream-based API due to improper
    validation of user-supplied input before it is
    deserialized. An authenticated, remote attacker can
    exploit this, via a specially crafted request, to
    execute arbitrary code. (CVE-2017-2608)

  - A flaw exists in the search box implementation due to
    the autocompletion feature displaying the names of
    restricted views. An authenticated, remote attacker can
    exploit this to disclose sensitive names of views.
    (CVE-2017-2609)

  - A stored cross-site scripting (XSS) vulnerability exists
    due to improper validation of input passed in user names
    before returning it to users. An authenticated, remote
    attacker can exploit this, via a specially crafted
    request, to execute arbitrary script code in a user's
    browser session. (CVE-2017-2610)

  - A flaw exists due to improper validation of permissions
    to the /workspaceCleanup and /fingerprintCleanup URLs.
    An authenticated, remote attacker can exploit this to
    cause a high load on the master and agents.
    (CVE-2017-2611)

  - A flaw exists due to a failure to properly restrict
    access to JDK download credentials. An authenticated,
    remote attacker can exploit this to overwrite the
    credentials, thereby causing builds to fail.
    (CVE-2017-2612)

  - A cross-site request forgery (XSRF) vulnerability exists
    due to a failure by HTTP GET requests to /user to
    require multiple steps, explicit confirmation, or a
    unique token when performing certain sensitive actions.
    An unauthenticated, remote attacker can exploit this, by
    convincing a user to follow a specially crafted link, to
    cause the creation of new temporary users.
    (CVE-2017-2613)

  - An information disclosure vulnerability which exists in 
    its re-key admin monitor component due to world readable 
    permissions being set on the directory it creates to 
    store secret information. An unauthenticated, remote 
    attacker can exploit this to disclose information 
    contained in this directory.
    (CVE-2017-1000362)");

  script_set_attribute(attribute:"see_also", value:"https://jenkins.io/security/advisory/2017-02-01/");
  script_set_attribute(attribute:"see_also", value:"https://www.cloudbees.com/cloudbees-security-advisory-2017-02-01");
  script_set_attribute(attribute:"see_also", value:"https://jenkins.io/changelog/");
  script_set_attribute(attribute:"see_also", value:"https://jenkins.io/changelog-stable/");
  script_set_attribute(attribute:"solution", value:
"Upgrade Jenkins to version 2.44 or later, Jenkins LTS to version
2.32.2 or later, or Jenkins Operations Center to version 1.625.22.1 /
2.7.22.0.1 / 2.32.2.1 or later, or Jenkins Enterprise to version
1.651.22.1 / 2.7.22.0.1 / 2.32.2.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-2608");
  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:"2011/07/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/08");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cloudbees:jenkins");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("jenkins_detect.nasl");
  script_require_ports("Services/www", 8080);
  script_require_keys("installed_sw/Jenkins");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

app = "Jenkins";
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:8080);

install = get_single_install(
  app_name : app,
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
version = install['version'];
edition = install['Edition'];
app = app + " " + edition;
install_url = build_url(port:port, qs:dir);
fix = NULL;

if (edition == "Enterprise")
{
  if ( version =~ "^1\." )
    fix = "1.651.22.1";
  else if ( version =~ "^2\.7\.(\d)+\.0\." )
    fix = "2.7.22.0.1";
  else
    fix = "2.32.2.1";
}
else if (edition == "Operations Center")
{
  if ( version =~ "^1\." )
    fix = "1.625.22.1";
  else if ( version =~ "^2\.7\.(\d)+\.0\." )
    fix = "2.7.22.0.1";
  else
    fix = "2.32.2.1";
}
else if (edition == "Open Source LTS")
{
  fix = '2.32.2';
}
else if (edition == "Open Source")
{
  fix = '2.44';
}

if (isnull(fix))
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, version);

if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
{
  order = make_list("URL", "Product", "Version", "Fixed Version");
  report = make_array(
    order[0], install_url,
    order[1], app,
    order[2], version,
    order[3], fix
  );
  report = report_items_str(report_items:report, ordered_fields:order);

  security_report_v4(port:port, severity:SECURITY_WARNING, extra:report, xss:TRUE, xsrf:TRUE);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, version);
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_5CFA9D0C73D74642AF4F28FBED9E9404.NASL
    descriptionJenkins Security Advisory : Please reference CVE/URL list for details
    last seen2020-06-01
    modified2020-06-02
    plugin id96939
    published2017-02-02
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/96939
    titleFreeBSD : jenkins -- multiple vulnerabilities (5cfa9d0c-73d7-4642-af4f-28fbed9e9404)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 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(96939);
  script_version("3.9");
  script_cvs_date("Date: 2019/07/10 16:04:13");

  script_cve_id("CVE-2011-4969", "CVE-2015-0886", "CVE-2017-2598", "CVE-2017-2599", "CVE-2017-2600", "CVE-2017-2601", "CVE-2017-2602", "CVE-2017-2603", "CVE-2017-2604", "CVE-2017-2605", "CVE-2017-2606", "CVE-2017-2607", "CVE-2017-2608", "CVE-2017-2609", "CVE-2017-2610", "CVE-2017-2611", "CVE-2017-2612", "CVE-2017-2613");

  script_name(english:"FreeBSD : jenkins -- multiple vulnerabilities (5cfa9d0c-73d7-4642-af4f-28fbed9e9404)");
  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:
"Jenkins Security Advisory :

Please reference CVE/URL list for details"
  );
  # https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2017-02-01
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f48db5ed"
  );
  # https://vuxml.freebsd.org/freebsd/5cfa9d0c-73d7-4642-af4f-28fbed9e9404.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?42cc67a2"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:jenkins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:jenkins-lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/02/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 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:"jenkins<2.44")) flag++;
if (pkg_test(save_report:TRUE, pkg:"jenkins-lts<2.32.2")) 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");

References