VDB-16359 · CVE-2001-1422 · VU#303080

AT&T WinVNC 3.3.3 Authentication missing encryption

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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in AT&T WinVNC 3.3.3. It has been rated as critical. This affects an unknown part of the component Authentication. Performing a manipulation results in missing encryption. This vulnerability is cataloged as CVE-2001-1422. There is no exploit available.

Detailsinfo

A vulnerability was found in AT&T WinVNC 3.3.3. It has been classified as critical. This affects an unknown function of the component Authentication. The manipulation with an unknown input leads to a missing encryption vulnerability. CWE is classifying the issue as CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.

The weakness was shared 01/23/2001 with Core as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is uniquely identified as CVE-2001-1422 since 03/20/2005. 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 attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (5992) and SecurityFocus (BID 2275†). The entry VDB-19215 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

AT&T

Name

WinVNC

Version

3.3.3

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/23/2001 🔍
01/23/2001 +0 days 🔍
01/23/2001 +0 days 🔍
03/20/2005 +1517 days 🔍
07/02/2014 +3391 days 🔍
11/15/2024 +3789 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Organization: Core
Status: Confirmed

CVE: CVE-2001-1422 (🔍)
GCVE (CVE): GCVE-0-2001-1422
GCVE (VulDB): GCVE-100-16359
CERT: 🔍
X-Force: 5992 - VNC weak authentication could allow unauthorized access
SecurityFocus: 2275 - AT&T VNC Weak Authentication Vulnerability

See also: 🔍

Entryinfo

Created: 07/03/2014 01:01
Updated: 11/15/2024 02:42
Changes: 07/03/2014 01:01 (51), 05/29/2018 09:19 (6), 11/15/2024 02:42 (17)
Complete: 🔍
Cache ID: 216::103