Microsoft Windows Live Messenger 2009 msnmsgr.exe input validation

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$25k-$100k0.00

Summaryinfo

A vulnerability classified as problematic was found in Microsoft Windows Live Messenger 2009. This affects an unknown part of the file msnmsgr.exe. The manipulation results in input validation. This vulnerability is known as CVE-2009-0647. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in Microsoft Windows Live Messenger 2009 (Operating System). Affected is an unknown function of the file msnmsgr.exe. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

msnmsgr.exe in Windows Live Messenger (WLM) 2009 build 14.0.8064.206, and other 14.0.8064.x builds, allows remote attackers to cause a denial of service (application crash) via a modified header in a packet, as possibly demonstrated by a UTF-8.0 value of the charset field in the Content-Type header line. NOTE: this has been reported as a format string vulnerability by some sources, but the provenance of that information is unknown.

The bug was discovered 02/18/2009. The weakness was published 02/19/2009 (Website). The advisory is shared for download at xforce.iss.net. This vulnerability is traded as CVE-2009-0647 since 02/19/2009. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $25k-$100k (estimation calculated on 05/03/2025).

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116223 (Windows Live Messenger Charset Data Remote Denial of Service Vulnerability).

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 (48810), SecurityFocus (BID 33825†), OSVDB (55645†), Secunia (SA33985†) and Vulnerability Center (SBV-20999†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

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

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 900461
OpenVAS Name: Microsoft MSN Live Messneger Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/18/2009 🔍
02/18/2009 +0 days 🔍
02/18/2009 +0 days 🔍
02/19/2009 +1 days 🔍
02/19/2009 +0 days 🔍
02/19/2009 +0 days 🔍
02/19/2009 +0 days 🔍
03/17/2015 +2217 days 🔍
05/03/2025 +3700 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: xforce.iss.net
Status: Not defined

CVE: CVE-2009-0647 (🔍)
GCVE (CVE): GCVE-0-2009-0647
GCVE (VulDB): GCVE-100-46620
X-Force: 48810
SecurityFocus: 33825 - Windows Live Messenger Charset Data Remote Denial Of Service Vulnerability
Secunia: 33985
OSVDB: 55645 - CVE-2009-0647 - Windows Live Messenger - Denial-Of-Service Issue
Vulnerability Center: 20999 - Microsoft Windows Liver Messenger 2009 Remote DoS Vulnerability, High
Vupen: ADV-2009-0466

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/03/2025 12:07
Changes: 03/17/2015 16:11 (62), 08/28/2019 07:15 (6), 05/03/2025 12:07 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!