Vulnerabilities > CVE-2016-4476 - Improper Input Validation vulnerability in multiple products

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
w1-fi
canonical
CWE-20
nessus

Summary

hostapd 0.6.7 through 2.5 and wpa_supplicant 0.6.7 through 2.5 do not reject \n and \r characters in passphrase parameters, which allows remote attackers to cause a denial of service (daemon outage) via a crafted WPS operation.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_967B852B1E2811E68DD3002590263BF5.NASL
    descriptionJouni Malinen reports : psk configuration parameter update allowing arbitrary data to be written (2016-1 - CVE-2016-4476/CVE-2016-4477).
    last seen2020-06-01
    modified2020-06-02
    plugin id91268
    published2016-05-20
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/91268
    titleFreeBSD : hostapd and wpa_supplicant -- psk configuration parameter update allowing arbitrary data to be written (967b852b-1e28-11e6-8dd3-002590263bf5)
    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(91268);
      script_version("2.5");
      script_cvs_date("Date: 2019/07/10 16:04:13");
    
      script_cve_id("CVE-2016-4476", "CVE-2016-4477");
    
      script_name(english:"FreeBSD : hostapd and wpa_supplicant -- psk configuration parameter update allowing arbitrary data to be written (967b852b-1e28-11e6-8dd3-002590263bf5)");
      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:
    "Jouni Malinen reports :
    
    psk configuration parameter update allowing arbitrary data to be
    written (2016-1 - CVE-2016-4476/CVE-2016-4477)."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209564"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2016-1/psk-parameter-config-update.txt"
      );
      # https://vuxml.freebsd.org/freebsd/967b852b-1e28-11e6-8dd3-002590263bf5.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?86ba1d12"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
      script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:hostapd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:wpa_supplicant");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/02");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/05/20");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/20");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2019 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:"wpa_supplicant<2.5_2")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"hostapd<2.6")) 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 familyDebian Local Security Checks
    NASL idDEBIAN_DLA-473.NASL
    descriptionA vulnerability was found in how hostapd and wpa_supplicant writes the configuration file update for the WPA/WPA2 passphrase parameter. If this parameter has been updated to include control characters either through a WPS operation (CVE-2016-4476) or through local configuration change over the wpa_supplicant control interface (CVE-2016-4477), the resulting configuration file may prevent the hostapd and wpa_supplicant from starting when the updated file is used. In addition for wpa_supplicant, it may be possible to load a local library file and execute code from there with the same privileges under which the wpa_supplicant process runs. CVE-2016-4476 hostapd 0.6.7 through 2.5 and wpa_supplicant 0.6.7 through 2.5 do not reject \n and \r characters in passphrase parameters, which allows remote attackers to cause a denial of service (daemon outage) via a crafted WPS operation. CVE-2016-4477 wpa_supplicant 0.4.0 through 2.5 does not reject \n and \r characters in passphrase parameters, which allows local users to trigger arbitrary library loading and consequently gain privileges, or cause a denial of service (daemon outage), via a crafted (1) SET, (2) SET_CRED, or (3) SET_NETWORK command. For Debian 7
    last seen2020-03-17
    modified2016-05-16
    plugin id91135
    published2016-05-16
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/91135
    titleDebian DLA-473-1 : wpa security update
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Debian Security Advisory DLA-473-1. The text
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(91135);
      script_version("2.8");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");
    
      script_cve_id("CVE-2016-4476", "CVE-2016-4477");
    
      script_name(english:"Debian DLA-473-1 : wpa security update");
      script_summary(english:"Checks dpkg output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Debian host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "A vulnerability was found in how hostapd and wpa_supplicant writes the
    configuration file update for the WPA/WPA2 passphrase parameter. If
    this parameter has been updated to include control characters either
    through a WPS operation (CVE-2016-4476) or through local configuration
    change over the wpa_supplicant control interface (CVE-2016-4477), the
    resulting configuration file may prevent the hostapd and
    wpa_supplicant from starting when the updated file is used. In
    addition for wpa_supplicant, it may be possible to load a local
    library file and execute code from there with the same privileges
    under which the wpa_supplicant process runs.
    
    CVE-2016-4476 hostapd 0.6.7 through 2.5 and wpa_supplicant 0.6.7
    through 2.5 do not reject \n and \r characters in passphrase
    parameters, which allows remote attackers to cause a denial of service
    (daemon outage) via a crafted WPS operation.
    
    CVE-2016-4477 wpa_supplicant 0.4.0 through 2.5 does not reject \n and
    \r characters in passphrase parameters, which allows local users to
    trigger arbitrary library loading and consequently gain privileges, or
    cause a denial of service (daemon outage), via a crafted (1) SET, (2)
    SET_CRED, or (3) SET_NETWORK command.
    
    For Debian 7 'Wheezy', these problems have been fixed in version
    1.0-3+deb7u4.
    
    We recommend that you upgrade your wpa packages.
    
    NOTE: Tenable Network Security has extracted the preceding description
    block directly from the DLA security advisory. Tenable has attempted
    to automatically clean and format it as much as possible without
    introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://lists.debian.org/debian-lts-announce/2016/05/msg00025.html"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/wheezy/wpa"
      );
      script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:hostapd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wpagui");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wpasupplicant");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wpasupplicant-udeb");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2016/05/14");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/16");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2020 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:"7.0", prefix:"hostapd", reference:"1.0-3+deb7u4")) flag++;
    if (deb_check(release:"7.0", prefix:"wpagui", reference:"1.0-3+deb7u4")) flag++;
    if (deb_check(release:"7.0", prefix:"wpasupplicant", reference:"1.0-3+deb7u4")) flag++;
    if (deb_check(release:"7.0", prefix:"wpasupplicant-udeb", reference:"1.0-3+deb7u4")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_04BC4E239A7042CB9FEC3613632D34BC.NASL
    descriptionJouni Malinen reports : EAP-pwd missing last fragment length validation. (2015-7 - CVE-2015-5315) psk configuration parameter update allowing arbitrary data to be written. (2016-1 - CVE-2016-4476)
    last seen2020-06-01
    modified2020-06-02
    plugin id99058
    published2017-03-30
    reporterThis script is Copyright (C) 2017 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/99058
    titleFreeBSD : hostapd -- multiple vulnerabilities (04bc4e23-9a70-42cb-9fec-3613632d34bc)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from the FreeBSD VuXML database :
    #
    # Copyright 2003-2017 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(99058);
      script_version("$Revision: 3.1 $");
      script_cvs_date("$Date: 2017/03/30 13:31:43 $");
    
      script_name(english:"FreeBSD : hostapd -- multiple vulnerabilities (04bc4e23-9a70-42cb-9fec-3613632d34bc)");
      script_summary(english:"Checks for updated package in pkg_info output");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote FreeBSD host is missing a security-related update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Jouni Malinen reports :
    
    EAP-pwd missing last fragment length validation. (2015-7 -
    CVE-2015-5315)
    
    psk configuration parameter update allowing arbitrary data to be
    written. (2016-1 - CVE-2016-4476)"
      );
      # http://www.freebsd.org/ports/portaudit/04bc4e23-9a70-42cb-9fec-3613632d34bc.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?28f05464"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected package.");
      script_set_attribute(attribute:"risk_factor", value:"High");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:hostapd");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/03");
      script_set_attribute(attribute:"patch_publication_date", value:"2017/03/28");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/30");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017 Tenable Network Security, Inc.");
      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:"hostapd<2.6")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3455-1.NASL
    descriptionMathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly handled WPA2. A remote attacker could use this issue with key reinstallation attacks to obtain sensitive information. (CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088) Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled invalid characters in passphrase parameters. A remote attacker could use this issue to cause a denial of service. (CVE-2016-4476) Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled invalid characters in passphrase parameters. A local attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2016-4477). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id103863
    published2017-10-17
    reporterUbuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/103863
    titleUbuntu 14.04 LTS / 16.04 LTS / 17.04 : wpa vulnerabilities (USN-3455-1) (KRACK)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Ubuntu Security Notice USN-3455-1. The text 
    # itself is copyright (C) Canonical, Inc. See 
    # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
    # trademark of Canonical, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(103863);
      script_version("3.19");
      script_cvs_date("Date: 2019/09/18 12:31:47");
    
      script_cve_id("CVE-2016-4476", "CVE-2016-4477", "CVE-2017-13077", "CVE-2017-13078", "CVE-2017-13079", "CVE-2017-13080", "CVE-2017-13081", "CVE-2017-13082", "CVE-2017-13086", "CVE-2017-13087", "CVE-2017-13088");
      script_xref(name:"USN", value:"3455-1");
      script_xref(name:"IAVA", value:"2017-A-0310");
    
      script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : wpa vulnerabilities (USN-3455-1) (KRACK)");
      script_summary(english:"Checks dpkg output for updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Ubuntu host is missing one or more security-related
    patches."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly
    handled WPA2. A remote attacker could use this issue with key
    reinstallation attacks to obtain sensitive information.
    (CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080,
    CVE-2017-13081, CVE-2017-13082, CVE-2017-13086, CVE-2017-13087,
    CVE-2017-13088)
    
    Imre Rad discovered that wpa_supplicant and hostapd incorrectly
    handled invalid characters in passphrase parameters. A remote attacker
    could use this issue to cause a denial of service. (CVE-2016-4476)
    
    Imre Rad discovered that wpa_supplicant and hostapd incorrectly
    handled invalid characters in passphrase parameters. A local attacker
    could use this issue to cause a denial of service, or possibly execute
    arbitrary code. (CVE-2016-4477).
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Ubuntu security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://usn.ubuntu.com/3455-1/"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected hostapd and / or wpasupplicant packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:hostapd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:wpasupplicant");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.04");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/09");
      script_set_attribute(attribute:"patch_publication_date", value:"2017/10/16");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/17");
      script_set_attribute(attribute:"in_the_news", value:"true");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_set_attribute(attribute:"stig_severity", value:"II");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Ubuntu Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("ubuntu.inc");
    include("misc_func.inc");
    
    if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/Ubuntu/release");
    if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
    release = chomp(release);
    if (! preg(pattern:"^(14\.04|16\.04|17\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 17.04", "Ubuntu " + release);
    if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);
    
    flag = 0;
    
    if (ubuntu_check(osver:"14.04", pkgname:"hostapd", pkgver:"2.1-0ubuntu1.5")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"wpasupplicant", pkgver:"2.1-0ubuntu1.5")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"hostapd", pkgver:"2.4-0ubuntu6.2")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"wpasupplicant", pkgver:"2.4-0ubuntu6.2")) flag++;
    if (ubuntu_check(osver:"17.04", pkgname:"hostapd", pkgver:"2.4-0ubuntu9.1")) flag++;
    if (ubuntu_check(osver:"17.04", pkgname:"wpasupplicant", pkgver:"2.4-0ubuntu9.1")) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        extra      : ubuntu_report_get()
      );
      exit(0);
    }
    else
    {
      tested = ubuntu_pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "hostapd / wpasupplicant");
    }
    
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-1201.NASL
    descriptionThis update for hostapd fixes the following issues : - Fix KRACK attacks on the AP side (boo#1063479, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13087, CVE-2017-13088) : Hostap was updated to upstream release 2.6 - fixed EAP-pwd last fragment validation [http://w1.fi/security/2015-7/] (CVE-2015-5314) - fixed WPS configuration update vulnerability with malformed passphrase [http://w1.fi/security/2016-1/] (CVE-2016-4476) - extended channel switch support for VHT bandwidth changes - added support for configuring new ANQP-elements with anqp_elem=<InfoID>:<hexdump of payload> - fixed Suite B 192-bit AKM to use proper PMK length (note: this makes old releases incompatible with the fixed behavior) - added no_probe_resp_if_max_sta=1 parameter to disable Probe Response frame sending for not-associated STAs if max_num_sta limit has been reached - added option (-S as command line argument) to request all interfaces to be started at the same time - modified rts_threshold and fragm_threshold configuration parameters to allow -1 to be used to disable RTS/fragmentation - EAP-pwd: added support for Brainpool Elliptic Curves (with OpenSSL 1.0.2 and newer) - fixed EAPOL reauthentication after FT protocol run - fixed FTIE generation for 4-way handshake after FT protocol run - fixed and improved various FST operations - TLS server - support SHA384 and SHA512 hashes - support TLS v1.2 signature algorithm with SHA384 and SHA512 - support PKCS #5 v2.0 PBES2 - support PKCS #5 with PKCS #12 style key decryption - minimal support for PKCS #12 - support OCSP stapling (including ocsp_multi) - added support for OpenSSL 1.1 API changes - drop support for OpenSSL 0.9.8 - drop support for OpenSSL 1.0.0 - EAP-PEAP: support fast-connect crypto binding - RADIUS - fix Called-Station-Id to not escape SSID - add Event-Timestamp to all Accounting-Request packets - add Acct-Session-Id to Accounting-On/Off - add Acct-Multi-Session-Id ton Access-Request packets - add Service-Type (= Frames) - allow server to provide PSK instead of passphrase for WPA-PSK Tunnel_password case - update full message for interim accounting updates - add Acct-Delay-Time into Accounting messages - add require_message_authenticator configuration option to require CoA/Disconnect-Request packets to be authenticated - started to postpone WNM-Notification frame sending by 100 ms so that the STA has some more time to configure the key before this frame is received after the 4-way handshake - VHT: added interoperability workaround for 80+80 and 160 MHz channels - extended VLAN support (per-STA vif, etc.) - fixed PMKID derivation with SAE - nl80211 - added support for full station state operations - fix IEEE 802.1X/WEP EAP reauthentication and rekeying to use unencrypted EAPOL frames - added initial MBO support; number of extensions to WNM BSS Transition Management - added initial functionality for location related operations - added assocresp_elements parameter to allow vendor specific elements to be added into (Re)Association Response frames - improved Public Action frame addressing - use Address 3 = wildcard BSSID in GAS response if a query from an unassociated STA used that address - fix TX status processing for Address 3 = wildcard BSSID - add gas_address3 configuration parameter to control Address 3 behavior - added command line parameter -i to override interface parameter in hostapd.conf - added command completion support to hostapd_cli - added passive client taxonomy determination (CONFIG_TAXONOMY=y compile option and
    last seen2020-06-05
    modified2017-10-30
    plugin id104237
    published2017-10-30
    reporterThis script is Copyright (C) 2017-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/104237
    titleopenSUSE Security Update : hostapd (openSUSE-2017-1201) (KRACK)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from openSUSE Security Update openSUSE-2017-1201.
    #
    # The text description of this plugin is (C) SUSE LLC.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(104237);
      script_version("3.7");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2015-1863", "CVE-2015-4141", "CVE-2015-4142", "CVE-2015-4143", "CVE-2015-4144", "CVE-2015-4145", "CVE-2015-5314", "CVE-2016-4476", "CVE-2017-13078", "CVE-2017-13079", "CVE-2017-13080", "CVE-2017-13081", "CVE-2017-13087", "CVE-2017-13088");
      script_xref(name:"IAVA", value:"2017-A-0310");
    
      script_name(english:"openSUSE Security Update : hostapd (openSUSE-2017-1201) (KRACK)");
      script_summary(english:"Check for the openSUSE-2017-1201 patch");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote openSUSE host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for hostapd fixes the following issues :
    
      - Fix KRACK attacks on the AP side (boo#1063479,
        CVE-2017-13078, CVE-2017-13079, CVE-2017-13080,
        CVE-2017-13081, CVE-2017-13087, CVE-2017-13088) :
    
    Hostap was updated to upstream release 2.6
    
      - fixed EAP-pwd last fragment validation
        [http://w1.fi/security/2015-7/] (CVE-2015-5314)
    
      - fixed WPS configuration update vulnerability with
        malformed passphrase [http://w1.fi/security/2016-1/]
        (CVE-2016-4476)
    
      - extended channel switch support for VHT bandwidth
        changes
    
      - added support for configuring new ANQP-elements with
        anqp_elem=<InfoID>:<hexdump of payload>
    
      - fixed Suite B 192-bit AKM to use proper PMK length
        (note: this makes old releases incompatible with the
        fixed behavior)
    
      - added no_probe_resp_if_max_sta=1 parameter to disable
        Probe Response frame sending for not-associated STAs if
        max_num_sta limit has been reached
    
      - added option (-S as command line argument) to request
        all interfaces to be started at the same time
    
      - modified rts_threshold and fragm_threshold configuration
        parameters to allow -1 to be used to disable
        RTS/fragmentation
    
      - EAP-pwd: added support for Brainpool Elliptic Curves
        (with OpenSSL 1.0.2 and newer)
    
      - fixed EAPOL reauthentication after FT protocol run
    
      - fixed FTIE generation for 4-way handshake after FT
        protocol run
    
      - fixed and improved various FST operations
    
      - TLS server
    
      - support SHA384 and SHA512 hashes
    
      - support TLS v1.2 signature algorithm with SHA384 and
        SHA512
    
      - support PKCS #5 v2.0 PBES2
    
      - support PKCS #5 with PKCS #12 style key decryption
    
      - minimal support for PKCS #12
    
      - support OCSP stapling (including ocsp_multi)
    
      - added support for OpenSSL 1.1 API changes
    
      - drop support for OpenSSL 0.9.8
    
      - drop support for OpenSSL 1.0.0
    
      - EAP-PEAP: support fast-connect crypto binding
    
      - RADIUS
    
      - fix Called-Station-Id to not escape SSID
    
      - add Event-Timestamp to all Accounting-Request packets
    
      - add Acct-Session-Id to Accounting-On/Off
    
      - add Acct-Multi-Session-Id ton Access-Request packets
    
      - add Service-Type (= Frames)
    
      - allow server to provide PSK instead of passphrase for
        WPA-PSK Tunnel_password case
    
      - update full message for interim accounting updates
    
      - add Acct-Delay-Time into Accounting messages
    
      - add require_message_authenticator configuration option
        to require CoA/Disconnect-Request packets to be
        authenticated
    
      - started to postpone WNM-Notification frame sending by
        100 ms so that the STA has some more time to configure
        the key before this frame is received after the 4-way
        handshake
    
      - VHT: added interoperability workaround for 80+80 and 160
        MHz channels
    
      - extended VLAN support (per-STA vif, etc.)
    
      - fixed PMKID derivation with SAE
    
      - nl80211
    
      - added support for full station state operations
    
      - fix IEEE 802.1X/WEP EAP reauthentication and rekeying to
        use unencrypted EAPOL frames
    
      - added initial MBO support; number of extensions to WNM
        BSS Transition Management
    
      - added initial functionality for location related
        operations
    
      - added assocresp_elements parameter to allow vendor
        specific elements to be added into (Re)Association
        Response frames
    
      - improved Public Action frame addressing
    
      - use Address 3 = wildcard BSSID in GAS response if a
        query from an unassociated STA used that address
    
      - fix TX status processing for Address 3 = wildcard BSSID
    
      - add gas_address3 configuration parameter to control
        Address 3 behavior
    
      - added command line parameter -i to override interface
        parameter in hostapd.conf
    
      - added command completion support to hostapd_cli
    
      - added passive client taxonomy determination
        (CONFIG_TAXONOMY=y compile option and 'SIGNATURE <addr>'
        control interface command)
    
      - number of small fixes
    
    hostapd was updated to upstream release 2.5
    
      - (CVE-2015-1863) is fixed in upstream release 2.5
    
      - fixed WPS UPnP vulnerability with HTTP chunked transfer
        encoding [http://w1.fi/security/2015-2/] (CVE-2015-4141
        boo#930077)
    
      - fixed WMM Action frame parser
        [http://w1.fi/security/2015-3/] (CVE-2015-4142
        boo#930078)
    
      - fixed EAP-pwd server missing payload length validation
        [http://w1.fi/security/2015-4/] (CVE-2015-4143,
        CVE-2015-4144, CVE-2015-4145, boo#930079)
    
      - fixed validation of WPS and P2P NFC NDEF record payload
        length [http://w1.fi/security/2015-5/]
    
      - nl80211 :
    
      - fixed vendor command handling to check OUI properly
    
      - fixed hlr_auc_gw build with OpenSSL
    
      - hlr_auc_gw: allow Milenage RES length to be reduced
    
      - disable HT for a station that does not support WMM/QoS
    
      - added support for hashed password (NtHash) in EAP-pwd
        server
    
      - fixed and extended dynamic VLAN cases
    
      - added EAP-EKE server support for deriving Session-Id
    
      - set Acct-Session-Id to a random value to make it more
        likely to be unique even if the device does not have a
        proper clock
    
      - added more 2.4 GHz channels for 20/40 MHz HT co-ex scan
    
      - modified SAE routines to be more robust and PWE
        generation to be stronger against timing attacks
    
      - added support for Brainpool Elliptic Curves with SAE
    
      - increases maximum value accepted for cwmin/cwmax
    
      - added support for CCMP-256 and GCMP-256 as group ciphers
        with FT
    
      - added Fast Session Transfer (FST) module
    
      - removed optional fields from RSNE when using FT with PMF
        (workaround for interoperability issues with iOS 8.4)
    
      - added EAP server support for TLS session resumption
    
      - fixed key derivation for Suite B 192-bit AKM (this
        breaks compatibility with the earlier version)
    
      - added mechanism to track unconnected stations and do
        minimal band steering
    
      - number of small fixes"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2015-2/]"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2015-3/]"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2015-4/]"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2015-5/]"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2015-7/]"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://w1.fi/security/2016-1/]"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1063479"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=930077"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=930078"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=930079"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected hostapd packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:hostapd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:hostapd-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:hostapd-debugsource");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.2");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/10/27");
      script_set_attribute(attribute:"in_the_news", value:"true");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/30");
      script_set_attribute(attribute:"stig_severity", value:"II");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017-2020 Tenable Network Security, Inc.");
      script_family(english:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");
    
      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/SuSE/release");
    if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
    if (release !~ "^(SUSE42\.2|SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.2 / 42.3", release);
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    ourarch = get_kb_item("Host/cpu");
    if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
    if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
    
    flag = 0;
    
    if ( rpm_check(release:"SUSE42.2", reference:"hostapd-2.6-5.3.1") ) flag++;
    if ( rpm_check(release:"SUSE42.2", reference:"hostapd-debuginfo-2.6-5.3.1") ) flag++;
    if ( rpm_check(release:"SUSE42.2", reference:"hostapd-debugsource-2.6-5.3.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"hostapd-2.6-8.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"hostapd-debuginfo-2.6-8.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"hostapd-debugsource-2.6-8.1") ) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "hostapd / hostapd-debuginfo / hostapd-debugsource");
    }