UltraVNC 1.0.1 Challenge Response Mechanism missing encryption

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

Summaryinfo

A vulnerability was found in UltraVNC 1.0.1. It has been rated as critical. This affects an unknown part of the component Challenge Response Mechanism. The manipulation leads to missing encryption. This vulnerability is referenced as CVE-2006-2206. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in UltraVNC 1.0.1 (Connectivity Software) and classified as critical. This issue affects an unknown function of the component Challenge Response Mechanism. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The MS-Logon authentication scheme in UltraVNC (aka Ultr@VNC) 1.0.1 uses weak encryption (XOR) for challenge/response, which allows remote attackers to gain privileges by sniffing and decrypting passwords.

The weakness was published 05/05/2006 as confirmed posting (Bugtraq). The advisory is shared at archives.neohapsis.com. The identification of this vulnerability is CVE-2006-2206 since 05/04/2006. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (26283) and SecurityFocus (BID 17824†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

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

NVD Base Score: 🔍

Exploitinginfo

Class: Missing encryption
CWE: CWE-311 / CWE-310
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/03/2006 🔍
05/04/2006 +1 days 🔍
05/05/2006 +1 days 🔍
05/05/2006 +0 days 🔍
03/12/2015 +3233 days 🔍
02/24/2017 +715 days 🔍

Sourcesinfo

Advisory: archives.neohapsis.com
Status: Confirmed

CVE: CVE-2006-2206 (🔍)
GCVE (CVE): GCVE-0-2006-2206
GCVE (VulDB): GCVE-100-30065
X-Force: 26283 - Ultr@VNC MS-Logon weak encryption
SecurityFocus: 17824 - UltraVNC Weak Challenge-Response Authentication Vulnerability

Entryinfo

Created: 03/12/2015 12:19
Updated: 02/24/2017 13:11
Changes: 03/12/2015 12:19 (50), 02/24/2017 13:11 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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