Microsoft Windows 2000/Server 2003/XP Remote Desktop mstlsapi.dll improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows 2000/Server 2003/XP. It has been rated as problematic. The impacted element is an unknown function in the library mstlsapi.dll of the component Remote Desktop. The manipulation leads to improper authentication. This vulnerability is uniquely identified as CVE-2005-1794. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended that the affected component be replaced with an alternative.

Detailsinfo

A vulnerability was found in Microsoft Windows 2000/Server 2003/XP (Operating System). It has been rated as critical. This issue affects an unknown function in the library mstlsapi.dll of the component Remote Desktop. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, and integrity. The summary by CVE is:

Microsoft Terminal Server using Remote Desktop Protocol (RDP) 5.2 stores an RSA private key in mstlsapi.dll and uses it to sign a certificate, which allows remote attackers to spoof public keys of legitimate servers and conduct man-in-the-middle attacks.

The bug was discovered 06/06/2005. The weakness was disclosed 06/06/2005 by Massimiliano Montoro with oXid.it (Website). It is possible to read the advisory at oxid.it. The identification of this vulnerability is CVE-2005-1794 since 06/01/2005. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a exploit are known.

After even before and not, there has been an exploit disclosed. The exploit is available at oxid.it. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1931 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 18405 (Microsoft Windows Remote Desktop Protocol Server Man-in-the-Middle Weakness), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90250 (Microsoft Windows Remote Desktop Protocol Server Private Key Disclosure).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product.

The vulnerability is also documented in the databases at X-Force (21954), Tenable (18405), SecurityFocus (BID 13818†), OSVDB (17131†) and Secunia (SA15605†). The entry VDB-88283 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 18405
Nessus Name: Microsoft Windows Remote Desktop Protocol Server Man-in-the-Middle Weakness
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 902658
OpenVAS Name: Microsoft RDP Server Private Key Information Disclosure Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Alternative
Status: 🔍

0-Day Time: 🔍

Patch: windowsupdate.microsoft.com

Timelineinfo

02/17/2000 🔍
05/28/2005 +1927 days 🔍
05/30/2005 +2 days 🔍
05/30/2005 +0 days 🔍
06/01/2005 +2 days 🔍
06/01/2005 +0 days 🔍
06/01/2005 +0 days 🔍
06/06/2005 +5 days 🔍
06/06/2005 +0 days 🔍
06/06/2005 +0 days 🔍
06/06/2005 +0 days 🔍
06/14/2005 +7 days 🔍
07/03/2019 +5132 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: oxid.it
Researcher: Massimiliano Montoro
Organization: oXid.it
Status: Not defined

CVE: CVE-2005-1794 (🔍)
GCVE (CVE): GCVE-0-2005-1794
GCVE (VulDB): GCVE-100-1547

OVAL: 🔍

X-Force: 21954
SecurityFocus: 13818 - Microsoft Windows Remote Desktop Protocol Server Private Key Disclosure Vulnerability
Secunia: 15605 - Windows Remote Desktop Protocol Private Key Disclosure, Less Critical
OSVDB: 17131 - Microsoft Windows Remote Desktop Protocol (RDP) Private Key Disclosure
Vulnerability Center: 8241 - Microsoft RDP 4.0, 5.0 - 5.2 Allows a Man in the Middle Attack, Medium

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

Entryinfo

Created: 06/14/2005 12:30
Updated: 07/03/2019 11:52
Changes: 06/14/2005 12:30 (93), 07/03/2019 11:52 (7)
Complete: 🔍
Cache ID: 216:5D8:103

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

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