Vulnerabilities > CVE-2017-7178 - Cross-Site Request Forgery (CSRF) vulnerability in multiple products

047910
CVSS 8.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
deluge-torrent
debian
CWE-352
nessus

Summary

CSRF was discovered in the web UI in Deluge before 1.3.14. The exploitation methodology involves (1) hosting a crafted plugin that executes an arbitrary program from its __init__.py file and (2) causing the victim to download, install, and enable this plugin.

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 familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201703-06.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201703-06 (Deluge: Remote execution of arbitrary code) A CSRF vulnerability was discovered in the web UI of Deluge. Impact : A remote attacker could entice a user currently logged in into Deluge web UI to visit a malicious web page which uses forged requests to make Deluge download and install a Deluge plug-in provided by the attacker. The plug-in can then execute arbitrary code as the user running Deluge. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id99013
    published2017-03-28
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/99013
    titleGLSA-201703-06 : Deluge: Remote execution of arbitrary code
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 201703-06.
    #
    # The advisory text is Copyright (C) 2001-2017 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(99013);
      script_version("3.2");
      script_cvs_date("Date: 2019/04/10 16:10:17");
    
      script_cve_id("CVE-2017-7178");
      script_xref(name:"GLSA", value:"201703-06");
    
      script_name(english:"GLSA-201703-06 : Deluge: Remote execution of arbitrary code");
      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-201703-06
    (Deluge: Remote execution of arbitrary code)
    
        A CSRF vulnerability was discovered in the web UI of Deluge.
      
    Impact :
    
        A remote attacker could entice a user currently logged in into Deluge
          web UI to visit a malicious web page which uses forged requests to make
          Deluge download and install a Deluge plug-in provided by the attacker.
          The plug-in can then execute arbitrary code as the user running Deluge.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201703-06"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All Deluge users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=net-p2p/deluge-1.3.14'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:deluge");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/03/28");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/28");
      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:"Gentoo Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("qpkg.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
    if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (qpkg_check(package:"net-p2p/deluge", unaffected:make_list("ge 1.3.14"), vulnerable:make_list("lt 1.3.14"))) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = qpkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Deluge");
    }
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3856.NASL
    descriptionTwo vulnerabilities have been discovered in the web interface of the Deluge BitTorrent client (directory traversal and cross-site request forgery).
    last seen2020-06-01
    modified2020-06-02
    plugin id100278
    published2017-05-19
    reporterThis script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100278
    titleDebian DSA-3856-1 : deluge - security update
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Debian Security Advisory DSA-3856. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(100278);
      script_version("3.7");
      script_cvs_date("Date: 2018/11/10 11:49:38");
    
      script_cve_id("CVE-2017-7178", "CVE-2017-9031");
      script_xref(name:"DSA", value:"3856");
    
      script_name(english:"Debian DSA-3856-1 : deluge - security update");
      script_summary(english:"Checks dpkg output for the updated package");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Debian host is missing a security-related update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Two vulnerabilities have been discovered in the web interface of the
    Deluge BitTorrent client (directory traversal and cross-site request
    forgery)."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/jessie/deluge"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2017/dsa-3856"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Upgrade the deluge packages.
    
    For the stable distribution (jessie), these problems have been fixed
    in version 1.3.10-3+deb8u1."
      );
      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:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:deluge");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/05/18");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/19");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Debian Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("debian_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
    if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    if (deb_check(release:"8.0", prefix:"deluge", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluge-common", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluge-console", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluge-gtk", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluge-torrent", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluge-web", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluge-webui", reference:"1.3.10-3+deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"deluged", reference:"1.3.10-3+deb8u1")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-656.NASL
    descriptionThis update for deluge fixes two security issues : - CVE-2017-9031: A remote attacker may have used a directory traversal vulnerability in the web interface (bsc#1039815) - CVE-2017-7178: A remote attacher could have exploited a CSRF vulnerability to trick a logged-in user to perform actions in the WebUI (bsc#1039958) In addition, deluge was updated to 1.3.15 with the following fixes and changes : - Core: Fix issues with displaying libtorrent-rasterbar single proxy. - Core: Fix libtorrent-rasterbar 1.2 trackers crashing Deluge UIs. - Core: Fix an error in torrent priorities causing file priority mismatch in UIs. - GtkUI: Fix column sort state not saved in Thinclient mode. - GtkUI: Fix a connection manager error with malformed ip. - GtkUI: Rename SystemTray/Indicator
    last seen2020-06-05
    modified2017-06-07
    plugin id100658
    published2017-06-07
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100658
    titleopenSUSE Security Update : deluge (openSUSE-2017-656)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-863.NASL
    descriptionIt was discovered that there was a cross-site request forgery vulnerability in the WebUI component of the
    last seen2020-03-17
    modified2017-03-20
    plugin id97799
    published2017-03-20
    reporterThis script is Copyright (C) 2017-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/97799
    titleDebian DLA-863-1 : deluge security update