Microsoft Internet Explorer 5.5 Dotless IP Address authentication spoofing

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Internet Explorer 5.5. The affected element is an unknown function of the component Dotless IP Address Handler. Performing a manipulation results in authentication spoofing. This vulnerability is known as CVE-2001-0724. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Internet Explorer 5.5 (Web Browser). This affects an unknown code of the component Dotless IP Address Handler. The manipulation with an unknown input leads to a authentication spoofing vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Internet Explorer 5.5 allows remote attackers to bypass security restrictions via malformed URLs that contain dotless IP addresses, which causes Internet Explorer to process the page in the Intranet Zone, which may have fewer security restrictions, aka the "Zone Spoofing Vulnerability variant" of CVE-2001-0664.

The issue has been introduced in 07/08/2000. The weakness was published 04/09/2004 as MS01-055 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. This vulnerability is uniquely identified as CVE-2001-0724. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 494 days. During that time the estimated underground price was around $5k-$25k.

Applying the patch MS01-055 is able to eliminate this problem. The bugfix is ready for download at microsoft.com.

The vulnerability is also documented in the databases at X-Force (8471), OSVDB (5556†) and Vulnerability Center (SBV-830†). Similar entry is available at VDB-17594. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS01-055

Timelineinfo

07/08/2000 🔍
11/14/2001 +494 days 🔍
04/09/2004 +876 days 🔍
04/09/2004 +0 days 🔍
07/10/2014 +3744 days 🔍
06/10/2024 +3623 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS01-055
Status: Confirmed

CVE: CVE-2001-0724 (🔍)
GCVE (CVE): GCVE-0-2001-0724
GCVE (VulDB): GCVE-100-17595
X-Force: 8471 - Microsoft Internet Explorer dotless IP variant could allow rendering of Web sites with incorrect Security Zone
OSVDB: 5556 - Microsoft IE Dotless IP Intranet Zone Spoofing
Vulnerability Center: 830

See also: 🔍

Entryinfo

Created: 07/10/2014 12:35
Updated: 06/10/2024 22:39
Changes: 07/10/2014 12:35 (49), 04/07/2017 12:06 (12), 06/10/2024 22:39 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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