Vulnerabilities > CVE-2007-0213 - Improper Input Validation vulnerability in Microsoft Exchange Server 2000/2003/2007

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
microsoft
CWE-20
critical
nessus
exploit available

Summary

Microsoft Exchange Server 2000 SP3, 2003 SP1 and SP2, and 2007 does not properly decode certain MIME encoded e-mails, which allows remote attackers to execute arbitrary code via a crafted base64-encoded MIME e-mail message.

Vulnerable Configurations

Part Description Count
Application
Microsoft
4

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

idEDB-ID:47076
last seen2019-07-05
modified2019-07-05
published2019-07-05
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/47076
titleMicrosoft Exchange 2003 - base64-MIME Remote Code Execution

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS07-026.NASL
descriptionThe remote host is running a version of exchange that is vulnerable to a bug in the iCal attachment and MIME decoding routines, as well as in the IMAP literal processing and in OWA. These vulnerabilities could allow an attacker execute arbitrary code on the remote host.
last seen2020-06-01
modified2020-06-02
plugin id25165
published2007-05-08
reporterThis script is Copyright (C) 2006-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/25165
titleMS07-026: Vulnerability in Microsoft Exchange Could Allow Remote Code Execution (931832)

Oval

accepted2008-05-05T04:00:14.460-04:00
classvulnerability
contributors
  • nameRobert L. Hollis
    organizationThreatGuard, Inc.
  • nameClifford Farrugia
    organizationGFI Software
definition_extensions
  • commentMicrosoft Exchange Server 2000 Service Pack 3 is installed
    ovaloval:org.mitre.oval:def:1858
  • commentMicrosoft Exchange Server 2003 Service Pack 1 is installed
    ovaloval:org.mitre.oval:def:1672
  • commentMicrosoft Exchange Server 2003 Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:1869
  • commentMicrosoft Exchange Server 2007 (no Service Pack) is installed
    ovaloval:org.mitre.oval:def:1641
descriptionMicrosoft Exchange Server 2000 SP3, 2003 SP1 and SP2, and 2007 does not properly decode certain MIME encoded e-mails, which allows remote attackers to execute arbitrary code via a crafted base64-encoded MIME e-mail message.
familywindows
idoval:org.mitre.oval:def:1890
statusaccepted
submitted2007-05-09T10:04:48
titleMIME Decoding Vulnerability
version7

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/153533/msexchange2003-exec.txt
idPACKETSTORM:153533
last seen2019-07-10
published2019-07-05
reporterCharles Truscott
sourcehttps://packetstormsecurity.com/files/153533/Microsoft-Exchange-2003-base64-MIME-Remote-Code-Execution.html
titleMicrosoft Exchange 2003 base64-MIME Remote Code Execution