Microsoft Internet Explorer up to 6 FTP Client code injection

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Microsoft Internet Explorer up to 6. This impacts an unknown function of the component FTP Client. Such manipulation leads to code injection. This vulnerability is referenced as CVE-2004-1166. It is possible to launch the attack remotely. Furthermore, an exploit is available. Disabling the affected component is advisable.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer up to 6 (Web Browser) and classified as problematic. Affected by this issue is an unknown part of the component FTP Client. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, and integrity. CVE summarizes:

CRLF injection vulnerability in Microsoft Internet Explorer 6.0.2800.1106 and earlier allows remote attackers to execute arbitrary FTP commands via an ftp:// URL that contains a URL-encoded newline ("%0a") before the FTP command, which causes the commands to be inserted into the resulting FTP session, as demonstrated using a PORT command.

The weakness was published 03/12/2008 by Derek Abdine with Rapid7 (Website). The advisory is available at rapid7.com. This vulnerability is handled as CVE-2004-1166 since 12/09/2004. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 22184 (MS06-042: Cumulative Security Update for Internet Explorer (918899)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100036 (Microsoft Cumulative Security Update for Internet Explorer (MS06-042)).

The best possible mitigation is suggested to be disabling the affected component. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4604.

The vulnerability is also documented in the databases at X-Force (18384), Exploit-DB (24800), Tenable (22184), SecurityFocus (BID 11826†) and OSVDB (12299†). Similar entries are available at VDB-1028, VDB-2344, VDB-2343 and VDB-2440. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.4
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 22184
Nessus Name: MS06-042: Cumulative Security Update for Internet Explorer (918899)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Disable
Status: 🔍
Suricata ID: 2003230
Suricata Class: 🔍
Suricata Message: 🔍

TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

12/06/2004 🔍
12/06/2004 +0 days 🔍
12/09/2004 +3 days 🔍
12/31/2004 +22 days 🔍
08/08/2006 +585 days 🔍
08/08/2006 +0 days 🔍
08/09/2006 +1 days 🔍
03/12/2008 +581 days 🔍
03/18/2008 +6 days 🔍
09/14/2025 +6389 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: rapid7.com
Researcher: Derek Abdine
Organization: Rapid7
Status: Confirmed

CVE: CVE-2004-1166 (🔍)
GCVE (CVE): GCVE-0-2004-1166
GCVE (VulDB): GCVE-100-3650

OVAL: 🔍

X-Force: 18384
SecurityFocus: 11826 - Microsoft Internet Explorer FTP URI Arbitrary FTP Server Command Execution Vulnerability
Secunia: 29346 - Internet Explorer FTP Command Injection Vulnerability, Less Critical
OSVDB: 12299
SecurityTracker: 1012444 - Microsoft Internet Explorer Input Validation Error in Processing FTP URLs May Let Remote Users Inject Arbitrary FTP Commands
Vulnerability Center: 12502 - [MS06-042] Microsoft Internet Explorer FTP Commands Execution via URL-Encoded Newline, Medium
Vupen: ADV-2008-0870

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/18/2008 10:57
Updated: 09/14/2025 04:02
Changes: 03/18/2008 10:57 (55), 04/07/2017 12:01 (40), 03/16/2021 12:43 (3), 03/16/2021 12:48 (1), 09/14/2025 04:02 (18)
Complete: 🔍
Cache ID: 216:DB1:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!