Vulnerabilities > CVE-2017-9459 - Cross-site Scripting vulnerability in Paloaltonetworks Pan-Os

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
paloaltonetworks
CWE-79
nessus

Summary

Cross-site scripting (XSS) vulnerability in the management web interface in Palo Alto Networks PAN-OS before 6.1.18, 7.x before 7.0.16, 7.1.x before 7.1.11, and 8.x before 8.0.3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Vulnerable Configurations

Part Description Count
OS
Paloaltonetworks
142

Common Attack Pattern Enumeration and Classification (CAPEC)

  • 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.
  • Embedding Scripts in Non-Script Elements
    This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an attacker to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote attacker to collect and interpret the output of said attack.
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Cross-Site Scripting in Error Pages
    An attacker distributes a link (or possibly some other query structure) with a request to a third party web server that is malformed and also contains a block of exploit code in order to have the exploit become live code in the resulting error page. When the third party web server receives the crafted request and notes the error it then creates an error message that echoes the malformed message, including the exploit. Doing this converts the exploit portion of the message into to valid language elements that are executed by the viewing browser. When a victim executes the query provided by the attacker the infected error message error message is returned including the exploit code which then runs in the victim's browser. XSS can result in execution of code as well as data leakage (e.g. session cookies can be sent to the attacker). This type of attack is especially dangerous since the exploit appears to come from the third party web server, who the victim may trust and hence be more vulnerable to deception.
  • Cross-Site Scripting Using Alternate Syntax
    The attacker uses alternate forms of keywords or commands that result in the same action as the primary form but which may not be caught by filters. For example, many keywords are processed in a case insensitive manner. If the site's web filtering algorithm does not convert all tags into a consistent case before the comparison with forbidden keywords it is possible to bypass filters (e.g., incomplete black lists) by using an alternate case structure. For example, the "script" tag using the alternate forms of "Script" or "ScRiPt" may bypass filters where "script" is the only form tested. Other variants using different syntax representations are also possible as well as using pollution meta-characters or entities that are eventually ignored by the rendering engine. The attack can result in the execution of otherwise prohibited functionality.

Nessus

NASL familyPalo Alto Local Security Checks
NASL idPALO_ALTO_PAN-OS_8_0_3.NASL
descriptionThe version of Palo Alto Networks PAN-OS running on the remote host is 6.1.x prior to 6.1.18, 7.0.x prior to 7.0.17, 7.1.x prior to 7.1.12, or 8.0.x prior to 8.0.3. It is, therefore, affected by multiple vulnerabilities : - A denial of service vulnerability exists in the OpenSSL component that is triggered when handling a large number of consecutive
last seen2020-06-01
modified2020-06-02
plugin id101164
published2017-06-30
reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/101164
titlePalo Alto Networks PAN-OS 6.1.x < 6.1.18 / 7.0.x < 7.0.17 / 7.1.x < 7.1.12 / 8.0.x < 8.0.3 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(101164);
  script_version("1.11");
  script_cvs_date("Date: 2019/01/02 11:18:37");

  script_cve_id(
    "CVE-2016-8610",
    "CVE-2016-10229",
    "CVE-2017-8390",
    "CVE-2017-9458",
    "CVE-2017-9459",
    "CVE-2017-9467",
    "CVE-2017-12416"
  );
  script_bugtraq_id(
    93841,
    97397,
    99902,
    99907,
    99911,
    100614,
    100619
  );

  script_name(english:"Palo Alto Networks PAN-OS 6.1.x < 6.1.18 / 7.0.x < 7.0.17 / 7.1.x < 7.1.12 / 8.0.x < 8.0.3 Multiple Vulnerabilities");
  script_summary(english:"Checks the PAN-OS version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote PAN-OS host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description",value:
"The version of Palo Alto Networks PAN-OS running on the remote host is
6.1.x prior to 6.1.18, 7.0.x prior to 7.0.17, 7.1.x prior to 7.1.12,
or 8.0.x prior to 8.0.3. It is, therefore, affected by multiple
vulnerabilities :

  - A denial of service vulnerability exists in the OpenSSL
    component that is triggered when handling a large number
    of consecutive 'SSL3_AL_WARNING' undefined alerts. An
    unauthenticated, remote attacker can exploit this, by
    continuously sending warning alerts, to exhaust
    available CPU resources. Note that this vulnerability
    does not affect the 8.0.x version branch.
    (CVE-2016-8610)

  - A remote code execution vulnerability exists in the
    Linux kernel in udp.c due to an unsafe second checksum
    calculation during execution of a recv system call with
    the MSG_PEEK flag. An unauthenticated, remote attacker
    can exploit this, via specially crafted UDP traffic, to
    cause a denial of service condition or the execution of
    arbitrary code. Note that this vulnerability does not
    affect the 7.0.x version branch. (CVE-2016-10229)

  - A remote code execution vulnerability exists in the DNS
    proxy service that is triggered when resolving fully
    qualified domain names (FQDN). An unauthenticated,
    remote attacker can exploit this to execute arbitrary
    code. Note that this vulnerability was fixed in version
    7.1.10 for the 7.1.x version branch. (CVE-2017-8390)

  - A XML external entity (XXE) vulnerability exists due to
    an incorrectly configured XML parser accepting XML from
    an untrusted source. An unauthenticated, remote attacker
    can exploit this by sending specially crafted XML data
    to the GlobalProtect external interface. Exploitation of
    this vulnerability may allow disclosure of information,
    denial of service or server side request forgery.
    (CVE-2017-9458)

  - A stored cross-site scripting (XSS) vulnerability exists
    in the Firewall web interface due to improper validation
    of user-supplied input before returning it to users. An
    unauthenticated, remote attacker can exploit this, via a
    specially crafted request, to execute arbitrary script
    code in a user's browser session. (CVE-2017-9459)

  - A cross-site scripting (XSS) vulnerability exists in the
    GlobalProtect component due to improper validation of
    user-supplied input to unspecified request parameters.
    An unauthenticated, remote attacker can exploit this,
    via a specially crafted request, to execute arbitrary
    script code in a user's browser session.
    (CVE-2017-9467, CVE-2017-12416)

  - A denial of service vulnerability exists that is
    triggered when the system attempts to close the
    connection of a rogue client that ignored the URL
    filtering block page. An unauthenticated, remote
    attacker can exploit this to crash the interface. Note
    that this vulnerability does not affect the 6.1.x and
    7.0.x version branches.");
  # https://www.paloaltonetworks.com/documentation/80/pan-os/pan-os-release-notes/pan-os-8-0-3-addressed-issues
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9d557f3a");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/87");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/88");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/89");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/90");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/91");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/93");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/94");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Palo Alto Networks PAN-OS version 6.1.18 / 7.0.17 / 7.1.12
/ 8.0.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:N/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:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/01/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/30");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:paloaltonetworks:pan-os");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Palo Alto Local Security Checks");

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

  script_dependencies("palo_alto_version.nbin");
  script_require_keys("Host/Palo_Alto/Firewall/Version", "Host/Palo_Alto/Firewall/Full_Version");

  exit(0);
}

include("vcf.inc");

app_name = "Palo Alto Networks PAN-OS";

app_info = vcf::get_app_info(app:app_name, kb_ver:"Host/Palo_Alto/Firewall/Full_Version", webapp:true);

vcf::check_granularity(app_info:app_info, sig_segments:2);

constraints = [
  { "min_version" : "6.1", "max_version" : "6.1.17", "fixed_version" : "6.1.18" },
  { "min_version" : "7.0", "max_version" : "7.0.16", "fixed_version" : "7.0.17" },
  { "min_version" : "7.1", "max_version" : "7.1.11", "fixed_version" : "7.1.12" },
  { "min_version" : "8.0", "max_version" : "8.0.2", "fixed_version" : "8.0.3" }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE,flags:{xss:TRUE});