Vulnerabilities > CVE-2009-1536 - Improper Input Validation vulnerability in Microsoft .Net Framework, Windows Server 2008 and Windows Vista

047910
CVSS 2.6 - LOW
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
high complexity
microsoft
CWE-20
nessus

Summary

ASP.NET in Microsoft .NET Framework 2.0 SP1 and SP2 and 3.5 Gold and SP1, when ASP 2.0 is used in integrated mode on IIS 7.0, does not properly manage request scheduling, which allows remote attackers to cause a denial of service (daemon outage) via a series of crafted HTTP requests, aka "Remote Unauthenticated Denial of Service in ASP.NET Vulnerability."

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_idMS09-036
bulletin_url
date2009-08-11T00:00:00
impactDenial of Service
knowledgebase_id970957
knowledgebase_url
severityImportant
titleVulnerability in ASP.NET in Microsoft Windows Could Allow Denial of Service

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS09-036.NASL
descriptionThe remote host is running a version of the .NET Framework component of Microsoft Windows that is suspectible to a denial of service attack due to the way ASP.NET manages request scheduling. Using specially crafted anonymous HTTP requests, an anonymous, remote attacker can cause the web server to become unresponsive until the associated application pool is restarted. Note that the vulnerable code in the .NET Framework is exposed only through IIS 7.0 when operating in integrated mode.
last seen2020-06-01
modified2020-06-02
plugin id40555
published2009-08-11
reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/40555
titleMS09-036: Vulnerability in ASP.NET in Microsoft Windows Could Allow Denial of Service (970957)

Oval

accepted2014-08-18T04:06:12.998-04:00
classvulnerability
contributors
  • nameDragos Prisaca
    organizationGideon Technologies, Inc.
  • nameMaria Mikhno
    organizationALTX-SOFT
definition_extensions
  • commentMicrosoft Windows Vista (32-bit) is installed
    ovaloval:org.mitre.oval:def:1282
  • commentMicrosoft Windows Vista x64 Edition is installed
    ovaloval:org.mitre.oval:def:2041
  • commentMicrosoft .NET Framework 2.0 (Original RTM or later) is installed
    ovaloval:org.mitre.oval:def:1934
  • commentMicrosoft Windows Vista (32-bit) is installed
    ovaloval:org.mitre.oval:def:1282
  • commentMicrosoft Windows Vista x64 Edition is installed
    ovaloval:org.mitre.oval:def:2041
  • commentMicrosoft .NET Framework 2.0 (Original RTM or later) is installed
    ovaloval:org.mitre.oval:def:1934
  • commentMicrosoft Windows Vista (32-bit) is installed
    ovaloval:org.mitre.oval:def:1282
  • commentMicrosoft Windows Vista x64 Edition is installed
    ovaloval:org.mitre.oval:def:2041
  • commentMicrosoft Windows Server 2008 (32-bit) is installed
    ovaloval:org.mitre.oval:def:4870
  • commentMicrosoft Windows Server 2008 (64-bit) is installed
    ovaloval:org.mitre.oval:def:5356
  • commentMicrosoft Windows Server 2008 (ia-64) is installed
    ovaloval:org.mitre.oval:def:5667
  • commentMicrosoft .NET Framework 2.0 (Original RTM or later) is installed
    ovaloval:org.mitre.oval:def:1934
descriptionASP.NET in Microsoft .NET Framework 2.0 SP1 and SP2 and 3.5 Gold and SP1, when ASP 2.0 is used in integrated mode on IIS 7.0, does not properly manage request scheduling, which allows remote attackers to cause a denial of service (daemon outage) via a series of crafted HTTP requests, aka "Remote Unauthenticated Denial of Service in ASP.NET Vulnerability."
familywindows
idoval:org.mitre.oval:def:6393
statusaccepted
submitted2009-07-28T13:00:00
titleRemote Unauthenticated Denial of Service in ASP.NET Vulnerability
version38

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 35985 CVE(CAN) ID: CVE-2009-1536 Microsoft .NET Framework是一个流行的软件开发工具包。 ASP.NET管理请求调度的方式存在拒绝服务漏洞。攻击者可以创建特制的匿名HTTP请求导致受影响的Web服务器变得没有响应,直到重启相关的应用池。 仅可通过IIS 7.0暴露Microsoft .NET Framework中的漏洞代码。对于没有运行IIS 7.0的系统,无法利用这个漏洞。 Microsoft .NET Framework 3.5 SP1 Microsoft .NET Framework 3.5 Microsoft .NET Framework 2.0 SP2 Microsoft .NET Framework 2.0 SP1 临时解决方法: * 使用以下两种方法之一配置IIS 7.0使用原始线程池处理进程。 方法1:在注册表中指定maxConcurrentRequestsPerCPU值。 方法2:在ASPNET.Config文件的ASP.NET配置部分,指定应用池的maxConcurrentRequestsPerCPU值。 厂商补丁: Microsoft --------- Microsoft已经为此发布了一个安全公告(MS09-036)以及相应补丁: MS09-036:Vulnerability in ASP.NET in Microsoft Windows Could Allow Denial of Service (970957) 链接:http://www.microsoft.com/technet/security/bulletin/MS09-036.mspx?pf=true
idSSV:12042
last seen2017-11-19
modified2009-08-12
published2009-08-12
reporterRoot
titleMicrosoft .NET Framework请求调度远程拒绝服务漏洞(MS09-036)