Vulnerabilities > CVE-2013-3896 - Improper Input Validation vulnerability in Microsoft Silverlight
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
NONE Availability impact
NONE Summary
Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka "Silverlight Vulnerability."
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 7 |
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.
Exploit-Db
description | Microsoft Silverlight - ScriptObject Unsafe Memory Access (MS13-022) (Metasploit). CVE-2013-3896. Local exploit for Windows platform |
id | EDB-ID:41702 |
last seen | 2017-03-23 |
modified | 2017-03-23 |
published | 2017-03-23 |
reporter | Exploit-DB |
source | https://www.exploit-db.com/download/41702/ |
title | Microsoft Silverlight - ScriptObject Unsafe Memory Access (MS13-022) (Metasploit) |
Metasploit
description | This module exploits a vulnerability in Microsoft Silverlight. The vulnerability exists on the Initialize() method from System.Windows.Browser.ScriptObject, which access memory in an unsafe manner. Since it is accessible for untrusted code (user controlled) it's possible to dereference arbitrary memory which easily leverages to arbitrary code execution. In order to bypass DEP/ASLR a second vulnerability is used, in the public WriteableBitmap class from System.Windows.dll. This module has been tested successfully on IE6 - IE10, Windows XP SP3 / Windows 7 SP1. |
id | MSF:EXPLOIT/WINDOWS/BROWSER/MS13_022_SILVERLIGHT_SCRIPT_OBJECT |
last seen | 2020-06-07 |
modified | 2017-07-24 |
published | 2013-11-22 |
references | |
reporter | Rapid7 |
source | https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/browser/ms13_022_silverlight_script_object.rb |
title | MS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access |
Msbulletin
bulletin_id | MS13-087 |
bulletin_url | |
date | 2013-10-08T00:00:00 |
impact | Information Disclosure |
knowledgebase_id | 2890788 |
knowledgebase_url | |
severity | Important |
title | Vulnerability in Silverlight Could Allow Information Disclosure |
Nessus
NASL family Windows : Microsoft Bulletins NASL id SMB_NT_MS13-087.NASL description The version of Microsoft Silverlight installed on the remote host reportedly is affected by an information disclosure vulnerability due to its failure to properly handle certain objects in memory. If an attacker could trick a user on the affected system into visiting a website hosting a malicious Silverlight application, the attacker could leverage this vulnerability to disclose information from the affected system, subject to the user last seen 2020-06-01 modified 2020-06-02 plugin id 70339 published 2013-10-09 reporter This script is Copyright (C) 2013-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/70339 title MS13-087: Vulnerability in Silverlight Could Allow Information Disclosure (2890788) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(70339); script_version("1.13"); script_cvs_date("Date: 2018/11/15 20:50:31"); script_cve_id("CVE-2013-3896"); script_bugtraq_id(62793); script_xref(name:"MSFT", value:"MS13-087"); script_xref(name:"MSKB", value:"2890788"); script_name(english:"MS13-087: Vulnerability in Silverlight Could Allow Information Disclosure (2890788)"); script_summary(english:"Checks version of Silverlight.exe"); script_set_attribute( attribute:"synopsis", value: "A browser enhancement on the remote Windows host is affected by an information disclosure vulnerability." ); script_set_attribute( attribute:"description", value: "The version of Microsoft Silverlight installed on the remote host reportedly is affected by an information disclosure vulnerability due to its failure to properly handle certain objects in memory. If an attacker could trick a user on the affected system into visiting a website hosting a malicious Silverlight application, the attacker could leverage this vulnerability to disclose information from the affected system, subject to the user's privileges." ); script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2013/ms13-087"); script_set_attribute(attribute:"solution", value:"Microsoft has released a set of patches for Silverlight 5."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"metasploit_name", value:'MS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2013/10/08"); script_set_attribute(attribute:"patch_publication_date", value:"2013/10/08"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/09"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:silverlight"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Windows : Microsoft Bulletins"); script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc."); script_dependencies("smb_hotfixes.nasl", "silverlight_detect.nasl", "ms_bulletin_checks_possible.nasl"); script_require_keys("SMB/MS_Bulletin_Checks/Possible"); script_require_ports(139, 445, "Host/patch_management_checks"); exit(0); } include("audit.inc"); include("smb_hotfixes_fcheck.inc"); include("smb_hotfixes.inc"); include("smb_func.inc"); include("misc_func.inc"); get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible"); bulletin = 'MS13-087'; kb = "2890788"; kbs = make_list(kb); if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING); get_kb_item_or_exit("SMB/Registry/Enumerated"); # Silverlight 5.x ver = get_kb_item("SMB/Silverlight/Version"); if (isnull(ver)) audit(AUDIT_NOT_INST, "Silverlight"); if (ver !~ "^5\.") audit(AUDIT_NOT_INST, "Silverlight 5"); fix = "5.1.20913.0"; if (ver_compare(ver:ver, fix:fix) == -1) { path = get_kb_item("SMB/Silverlight/Path"); if (isnull(path)) path = 'n/a'; report += '\n Path : ' + path + '\n Installed version : ' + ver + '\n Fixed version : ' + fix + '\n'; hotfix_add_report(report, bulletin:bulletin, kb:kb); set_kb_item(name:"SMB/Missing/"+bulletin, value:TRUE); hotfix_security_warning(); hotfix_check_fversion_end(); exit(0); } else { hotfix_check_fversion_end(); audit(AUDIT_HOST_NOT, 'affected'); }
NASL family MacOS X Local Security Checks NASL id MACOSX_MS13-087.NASL description The version of Microsoft Silverlight installed on the remote host is reportedly affected by an information disclosure vulnerability due to its failure to properly handle certain objects in memory. If an attacker could trick a user on the affected system into visiting a website hosting a malicious Silverlight application, the attacker could leverage this vulnerability to disclose information from the affected system, subject to the user last seen 2020-06-01 modified 2020-06-02 plugin id 70341 published 2013-10-09 reporter This script is Copyright (C) 2013-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/70341 title MS13-087: Vulnerability in Silverlight Could Allow Information Disclosure (2890788) (Mac OS X) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(70341); script_version("1.11"); script_cvs_date("Date: 2018/07/14 1:59:36"); script_cve_id("CVE-2013-3896"); script_bugtraq_id(62793); script_xref(name:"MSFT", value:"MS13-087"); script_xref(name:"MSKB", value:"2890788"); script_name(english:"MS13-087: Vulnerability in Silverlight Could Allow Information Disclosure (2890788) (Mac OS X)"); script_summary(english:"Checks version of Microsoft Silverlight"); script_set_attribute( attribute:"synopsis", value: "A multimedia application framework installed on the remote Mac OS X host is affected by an information disclosure vulnerability." ); script_set_attribute( attribute:"description", value: "The version of Microsoft Silverlight installed on the remote host is reportedly affected by an information disclosure vulnerability due to its failure to properly handle certain objects in memory. If an attacker could trick a user on the affected system into visiting a website hosting a malicious Silverlight application, the attacker could leverage this vulnerability to disclose information from the affected system, subject to the user's privileges." ); script_set_attribute(attribute:"see_also", value:"http://technet.microsoft.com/en-us/security/bulletin/ms13-087"); script_set_attribute(attribute:"solution", value:"Microsoft has released a patch for Silverlight 5."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"metasploit_name", value:'MS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2013/10/08"); script_set_attribute(attribute:"patch_publication_date", value:"2013/10/08"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/09"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:silverlight"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"MacOS X Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc."); script_dependencies("macosx_silverlight_installed.nasl"); script_require_keys("Host/local_checks_enabled", "Host/MacOSX/Version", "MacOSX/Silverlight/Installed"); exit(0); } include("global_settings.inc"); include("misc_func.inc"); kb_base = "MacOSX/Silverlight"; get_kb_item_or_exit(kb_base+"/Installed"); path = get_kb_item_or_exit(kb_base+"/Path", exit_code:1); version = get_kb_item_or_exit(kb_base+"/Version", exit_code:1); bulletin = "MS13-087"; kb = "2890788"; fixed_version = "5.1.20913.0"; if (version =~ "^5\." && ver_compare(ver:version, fix:fixed_version, strict:FALSE) < 0) { if (defined_func("report_xml_tag")) report_xml_tag(tag:bulletin, value:kb); if (report_verbosity > 0) { report = '\n Path : ' + path + '\n Installed version : ' + version + '\n Fixed version : '+fixed_version + '\n'; security_warning(port:0, extra:report); } else security_warning(0); exit(0); } else exit(0, "The Microsoft Silverlight "+version+" install is not reported to be affected.");
Oval
accepted 2013-11-26T13:49:21.624-05:00 class vulnerability contributors name SecPod Team organization SecPod Technologies definition_extensions comment Microsoft Silverlight 5 is installed oval oval:org.mitre.oval:def:16072 description Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka "Silverlight Vulnerability." family macos id oval:org.mitre.oval:def:19003 status accepted submitted 2013-10-15T08:32:29 title Vulnerability in Silverlight Could Allow Information Disclosure (CVE-2013-3896) - MS13-087 (Mac OS X) version 4 accepted 2014-04-07T04:02:06.508-04:00 class vulnerability contributors name SecPod Team organization SecPod Technologies name Maria Mikhno organization ALTX-SOFT
definition_extensions comment Microsoft Silverlight 5 is installed oval oval:org.mitre.oval:def:15148 description Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka "Silverlight Vulnerability." family windows id oval:org.mitre.oval:def:19055 status accepted submitted 2013-10-15T08:32:29 title Vulnerability in Silverlight Could Allow Information Disclosure (CVE-2013-3896) - MS13-087 version 8
Packetstorm
data source | https://packetstormsecurity.com/files/download/124182/ms13_022_silverlight_script_object.rb.txt |
id | PACKETSTORM:124182 |
last seen | 2016-12-05 |
published | 2013-11-26 |
reporter | Vitaliy Toropov |
source | https://packetstormsecurity.com/files/124182/Microsoft-Internet-Explorer-COALineDashStyleArray-Unsafe-Memory-Access.html |
title | Microsoft Internet Explorer COALineDashStyleArray Unsafe Memory Access |
The Hacker News
id | THN:BC65D2F30C85103414F6BD1EC204BB05 |
last seen | 2018-01-27 |
modified | 2014-05-21 |
published | 2014-05-21 |
reporter | Mohit Kumar |
source | https://thehackernews.com/2014/05/netflix-users-targeted-by-microsoft.html |
title | Netflix Users Targeted by Microsoft Silverlight Exploits |
References
- http://www.us-cert.gov/ncas/alerts/TA13-288A
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-087
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19003
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19055