Vulnerabilities > CVE-2012-0891 - Cross-Site Scripting vulnerability in Puppet Dashboard and Puppet Enterprise
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
Multiple cross-site scripting (XSS) vulnerabilities in Puppet Dashboard 1.0 before 1.2.5 and Enterprise 1.0 before 1.2.5 and 2.x before 2.0.1 allow remote attackers to inject arbitrary web script or HTML via unspecified fields.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
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 family CGI abuses : XSS NASL id PUPPET_ENTERPRISE_125.NASL description According to its self-reported version number, the Puppet Enterprise install on the remote host is later than version 1.0 but prior to 1.2.5 / 2.0.1. It is, therefore, affected by multiple cross-site scripting vulnerabilities. Multiple cross-site scripting flaws exist where unspecified input is not validated before being returned to the user. This could allow a remote attacker to execute arbitrary code within the browser and server trust relationship. Note that Nessus has not tested for these issues or otherwise determine if the patch has been applied. But, has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 73824 published 2014-05-02 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/73824 title Puppet Enterprise Multiple XSS Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(73824); script_version("1.6"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/12"); script_cve_id("CVE-2012-0891"); script_bugtraq_id(66602); script_name(english:"Puppet Enterprise Multiple XSS Vulnerabilities"); script_summary(english:"Checks puppet enterprise version"); script_set_attribute(attribute:"synopsis", value: "A web application on the remote host is potentially affected by multiple cross-site scripting vulnerabilities."); script_set_attribute(attribute:"description", value: "According to its self-reported version number, the Puppet Enterprise install on the remote host is later than version 1.0 but prior to 1.2.5 / 2.0.1. It is, therefore, affected by multiple cross-site scripting vulnerabilities. Multiple cross-site scripting flaws exist where unspecified input is not validated before being returned to the user. This could allow a remote attacker to execute arbitrary code within the browser and server trust relationship. Note that Nessus has not tested for these issues or otherwise determine if the patch has been applied. But, has instead relied only on the application's self-reported version number. Note that Nessus has not tested for these issues or otherwise determined if a hotfix is applied but has instead relied only on the application's self-reported version number."); script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2012-0891"); script_set_attribute(attribute:"solution", value:"Upgrade to Puppet Enterprise 1.2.5 / 2.0.1 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990); script_set_attribute(attribute:"vuln_publication_date", value:"2012/01/26"); script_set_attribute(attribute:"patch_publication_date", value:"2012/01/26"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/02"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:puppetlabs:puppet"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"CGI abuses : XSS"); script_copyright(english:"This script is Copyright (C) 2014-2020 Tenable Network Security, Inc."); script_dependencies("puppet_rest_detect.nasl"); script_require_keys("puppet/rest_port", "Settings/ParanoidReport"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("http.inc"); ## # checks if the given version falls between the given bounds, and # generates plugin output if it does # # @anonparam ver version to check # @anonparam fix first fixed version # @anonparam min_ver the lowest/earliest vulnerable version, relative to 'fix' (optional) # # @return plugin output if 'ver' is vulnerable relative to 'fix' and/or 'min_ver', # NULL otherwise ## function _check_version(enterprise) { local_var ver, fix, min_ver, major_ver, report; ver = _FCT_ANON_ARGS[0]; fix = _FCT_ANON_ARGS[1]; min_ver = _FCT_ANON_ARGS[2]; if ( # no lower bound (isnull(min_ver) && ver_compare(ver:ver, fix:fix, strict:FALSE) < 0) || # lower bound ( !isnull(min_ver) && ver_compare(ver:ver, fix:fix, strict:FALSE) < 0 && ver_compare(ver:ver, fix:min_ver, strict:FALSE) >= 0 ) ) { if (enterprise) { report = '\n Installed version : Puppet Enterprise ' + ver + '\n Fixed version : Puppet Enterprise ' + fix + '\n'; } else { report = '\n Installed version : Puppet Open Source ' + ver + '\n Fixed version : Puppet Open Source ' + fix + '\n'; } } else report = NULL; return report; } port = get_kb_item_or_exit('puppet/rest_port'); ver = get_kb_item_or_exit('puppet/' + port + '/version'); report = NULL; vuln = FALSE; if ('Enterprise' >< ver) { # nb: hotfixes are not reflected in the version number. if (report_paranoia < 2) audit(AUDIT_PARANOID); # convert something like # 2.7.19 (Puppet Enterprise 2.7.0) # to # 2.7.0 match = eregmatch(string:ver, pattern:"Enterprise ([0-9.]+)\)"); if (isnull(match)) audit(AUDIT_UNKNOWN_WEB_APP_VER, 'Puppet Enterprise', build_url(port:port)); ver = match[1]; # Resolved in Puppet Enterprise 1.2.5 and 2.0.1 if ( (report = _check_version(ver, '1.2.5', '1.0', enterprise:TRUE)) || (report = _check_version(ver, '2.0.1', '2.0', enterprise:TRUE)) ) vuln = TRUE; } if (!vuln) audit(AUDIT_LISTEN_NOT_VULN, 'Puppet', port, ver); set_kb_item(name:'www/'+port+'/XSS', value:TRUE); if (report_verbosity > 0) security_warning(port:port, extra:report); else security_warning(port);NASL family CGI abuses : XSS NASL id PUPPET_DASHBOARD_125.NASL description According to its self-reported version number, the Puppet Dashboard install on the remote host is later than version 1.0 but prior to 1.2.5. It is, therefore, affected by multiple cross-site scripting vulnerabilities. Multiple cross-site scripting flaws exist where unspecified input is not validated before being returned to the user. This could allow a remote attacker to execute arbitrary code within the browser and server trust relationship. Note that Nessus has not tested for these issues but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 73823 published 2014-05-02 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/73823 title Puppet Dashboard Multiple XSS Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(73823); script_version("1.7"); script_cvs_date("Date: 2019/06/04 15:09:32"); script_cve_id("CVE-2012-0891"); script_bugtraq_id(66602); script_name(english:"Puppet Dashboard Multiple XSS Vulnerabilities"); script_summary(english:"Checks Puppet Dashboard version"); script_set_attribute(attribute:"synopsis", value: "A web application on the remote host is potentially affected by multiple cross-site scripting vulnerabilities."); script_set_attribute(attribute:"description", value: "According to its self-reported version number, the Puppet Dashboard install on the remote host is later than version 1.0 but prior to 1.2.5. It is, therefore, affected by multiple cross-site scripting vulnerabilities. Multiple cross-site scripting flaws exist where unspecified input is not validated before being returned to the user. This could allow a remote attacker to execute arbitrary code within the browser and server trust relationship. Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number."); script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2012-0891"); script_set_attribute(attribute:"solution", value:"Upgrade to Puppet Dashboard 1.2.5 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990); script_set_attribute(attribute:"vuln_publication_date", value:"2012/01/26"); script_set_attribute(attribute:"patch_publication_date", value:"2012/01/26"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/02"); script_set_attribute(attribute:"potential_vulnerability", value:"true"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:puppetlabs:puppet_dashboard"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"CGI abuses : XSS"); script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("http_version.nasl"); script_require_keys("Settings/ParanoidReport"); script_require_ports("Services/www", 80, 3000); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("http.inc"); include("webapp_func.inc"); port = get_http_port(default:3000); # Puppet Dashboard is Open Source if (report_paranoia < 2) audit(AUDIT_PARANOID); url = '/'; res = http_send_recv3(method:'GET', item:url, port:port, exit_on_fail:TRUE); if ('<li class=\'\' id=\'dashboard-version\'>' >!< res[2]) audit(AUDIT_WEB_APP_NOT_INST, 'Puppet Dashboard', port); regex = '<a href=".*puppetlabs.*">(PE [0-9.]+|[0-9.rc]+)</a>'; matches = eregmatch(string:res[2], pattern:regex); if (isnull(matches)) audit(AUDIT_UNKNOWN_WEB_SERVER_VER, 'Puppet Dashboard', port); version = matches[1]; dir = ''; install = add_install(appname:'puppet_dashboard', dir:dir, ver:version, port:port, cpe: "cpe:/a:puppetlabs:puppet_dashboard"); install_url = build_url(port:port, qs:install["dir"]); if (version =~ "^PE") exit(0, "Puppet Enterprise Dashboard installed at "+ install_url); if ( version =~ "^1\.[01]([^0-9]|$)" || version =~ "^1\.2\.[0-4]([^0-9]|$)" ) { set_kb_item(name:"www/"+port+"/XSS", value:TRUE); if (report_verbosity > 0) { report = '\n URL : ' + install_url + '\n Installed version : ' + version + '\n Fixed versions : 1.2.5' + '\n'; security_warning(port:port, extra:report); } else security_warning(port); } else audit(AUDIT_WEB_APP_NOT_AFFECTED, "Puppet Dashboard", install_url, version);