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.
5.0	$0-$5k	0.00

A vulnerability was found in RealVNC RealVNC Windows Client 4.1.2.0. It has been declared as problematic. This vulnerability affects an unknown code of the file vncviewer.exe. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

vncviewer.exe in RealVNC Windows Client 4.1.2.0 allows remote VNC servers to cause a denial of service (application crash) via a crafted frame buffer update packet.

The bug was discovered 08/01/2008. The weakness was presented 08/06/2008 by beford (Website). The advisory is available at xforce.iss.net. This vulnerability was named CVE-2008-3493 since 08/06/2008. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k.

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 (44218) and Exploit-DB (6181).

Productinfo

Vendor

• RealVNC

Name

• RealVNC Windows Client

Version

• 4.1.2.0

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
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: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

OpenVAS ID: 900019
OpenVAS Name: RealVNC vncviewer.exe Remote DoS Vulnerability (Win)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/01/2008 🔍
08/01/2008 +0 days 🔍
08/01/2008 +0 days 🔍
08/06/2008 +5 days 🔍
08/06/2008 +0 days 🔍
08/06/2008 +0 days 🔍
11/02/2008 +88 days 🔍
03/17/2015 +2326 days 🔍
08/20/2019 +1617 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: beford
Status: Not defined

CVE: CVE-2008-3493 (🔍)
X-Force: 44218
Vulnerability Center: 19906 - RealVNC Windows Client 4.1.2.0 Remote Denial of Service via a Crafted Frame Buffer Update Packet, Medium
SecurityFocus: 30499 - RealVNC 4.1.2 'vncviewer.exe' Remote Denial of Service Vulnerability
OSVDB: 47447 - RealVNC - 4.1.2 'vncviewer.exe' Remote Denial of Service Issue

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

Entryinfo

Created: 03/17/2015 12:19
Updated: 08/20/2019 09:46
Changes: 03/17/2015 12:19 (65), 08/20/2019 09:46 (5)
Complete: 🔍

Discussion

Do you want to use VulDB in your project?

Use the official API to access entries easily!