Vulnerabilities > CVE-2012-0146 - Improper Input Validation vulnerability in Microsoft Forefront Unified Access Gateway 2010

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
NONE
network
microsoft
CWE-20
nessus
NVD
Published: 2012-04-10
Updated: 2018-10-12

Summary

Open redirect vulnerability in Microsoft Forefront Unified Access Gateway (UAG) 2010 SP1 and SP1 Update 1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted URL, aka "UAG Blind HTTP Redirect Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
2

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.

Msbulletin

bulletin_idMS12-026
bulletin_url
date2012-04-12T00:00:00
impactInformation Disclosure
knowledgebase_id2663860
knowledgebase_url
severityImportant
titleVulnerabilities in Forefront Unified Access Gateway (UAG) Could Allow Information Disclosure

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS12-026.NASL
descriptionThe version of Forefront Unified Access Gateway (UAG) running on the remote host has multiple vulnerabilities : - A spoofing vulnerability that could allow an attacker to redirect a victim to a malicious website. An attacker would have to trick the victim into clicking a specially crafted link in order to trigger the vulnerability. (CVE-2012-0146) - A flaw that could allow an unauthenticated user to access the default website of the UAG server from the external network. (CVE-2012-0147)
last seen2020-06-01
modified2020-06-02
plugin id58658
published2012-04-11
reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/58658
titleMS12-026: Vulnerabilities in Forefront Unified Access Gateway (UAG) Could Allow Information Disclosure (2663860)
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");


if (description)
{
  script_id(58658);
  script_version("1.13");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2012-0146", "CVE-2012-0147");
  script_bugtraq_id(52903, 52909);
  script_xref(name:"MSFT", value:"MS12-026");
  script_xref(name:"MSKB", value:"2649261");
  script_xref(name:"MSKB", value:"2649262");

  script_name(english:"MS12-026: Vulnerabilities in Forefront Unified Access Gateway (UAG) Could Allow Information Disclosure (2663860)");
  script_summary(english:"Checks version of Whlfilter.dll");

  script_set_attribute(
    attribute:"synopsis",
    value:
"A web application on the remote Windows host has multiple
vulnerabilities."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The version of Forefront Unified Access Gateway (UAG) running on the
remote host has multiple vulnerabilities :

  - A spoofing vulnerability that could allow an attacker to
    redirect a victim to a malicious website.  An attacker
    would have to trick the victim into clicking a specially
    crafted link in order to trigger the vulnerability.
    (CVE-2012-0146)

  - A flaw that could allow an unauthenticated user to
    access the default website of the UAG server from the
    external network. (CVE-2012-0147)"
  );
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2012/ms12-026");
  script_set_attribute(
    attribute:"solution",
    value:
"Microsoft has released a set of patches for UAG 2010 SP1 and UAG 2010
SP 1 Update 1."
  );
  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:U/RL:OF/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:"2012/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/04/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:forefront_unified_access_gateway");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");

  script_dependencies("forefront_uag_installed.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("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("misc_func.inc");

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS12-026';
kbs = make_list('2649261', '2649262');

if (get_kb_item('Host/patch_management_checks'))
  hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING);

path = get_kb_item_or_exit('SMB/forefront_uag/path');
path += "\von\bin\";
match = eregmatch(string:path, pattern:'^([A-Za-z]):');
if (isnull(match)) exit(1, 'Error parsing the UAG install path (' + path + ').');

share = match[1] + '$';
if (!is_accessible_share(share:share))
  exit(1, "Can't connect to "+share+" share.");

if (
  # UAG 2010 SP1
  hotfix_is_vulnerable(path:path, file:"Whlfilter.dll", version:"4.0.1753.10076", min_version:"4.0.1752.10000", bulletin:bulletin, kb:"2649261") ||

  # UAG 2010 SP1 Update 1
  hotfix_is_vulnerable(path:path, file:"Whlfilter.dll", version:"4.0.1773.10190", min_version:"4.0.1773.10100", bulletin:bulletin, kb:"2649262")
)
{
  set_kb_item(name:'SMB/Missing/' + bulletin, value:TRUE);
  hotfix_security_warning();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  exit(0, 'The host is not affected.');
}

Oval

accepted2012-05-28T04:01:09.656-04:00
classvulnerability
contributors
nameJosh Turpin
organizationSymantec Corporation
definition_extensions
  • commentMicrosoft Forefront Unified Access Gateway 2010 Service Pack 1
    ovaloval:org.mitre.oval:def:12917
  • commentMicrosoft Forefront Unified Access Gateway 2010 Service Pack 1 Update 1
    ovaloval:org.mitre.oval:def:15597
descriptionOpen redirect vulnerability in Microsoft Forefront Unified Access Gateway (UAG) 2010 SP1 and SP1 Update 1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted URL, aka "UAG Blind HTTP Redirect Vulnerability."
familywindows
idoval:org.mitre.oval:def:15476
statusaccepted
submitted2012-04-10T13:00:00
titleUAG Blind HTTP Redirect Vulnerability
version24

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 52903 CVE ID: CVE-2012-0146 Forefront Unified Access Gateway（UAG）是一款远程访问和协作软件。 Microsoft Forefront Unified Access Gateway (UAG)中存在可导致信息泄露的欺骗漏洞， 攻击者重定向UAG服务器的网络流量，发送恶意链接并诱使用户单击，利用此漏洞获取敏感信息。 0 Microsoft Forefront UAG 2010 厂商补丁： Microsoft --------- Microsoft已经为此发布了一个安全公告（MS12-026）以及相应补丁: MS12-026：Vulnerabilities in Forefront Unified Access Gateway (UAG) Could Allow Information Disclosure (2663860) 链接：http://www.microsoft.com/technet/security/bulletin/MS12-026.asp
idSSV:60041
last seen2017-11-19
modified2012-04-12
published2012-04-12
reporterRoot
titleMicrosoft Forefront Unified Access Gateway URI公开重定向漏洞(MS12-026)

References