Yahoo! Messenger up to 8.0 ActiveX Control memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Yahoo! Messenger up to 8.0. This impacts an unknown function of the component ActiveX Control. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2006-6603. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Yahoo! Messenger up to 8.0 (Messaging Software) and classified as critical. This issue affects an unknown functionality of the component ActiveX Control. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the YMMAPI.YMailAttach ActiveX control (ymmapi.dll) before 2005.1.1.4 in Yahoo! Messenger allows remote attackers to execute arbitrary code via a crafted HTML document. NOTE: some details were obtained from third party information.

The bug was discovered 12/08/2006. The weakness was shared 12/15/2006 by Peter Vreugdenhil (iDefense) with Yahoo! (Website). It is possible to read the advisory at messenger.yahoo.com. The identification of this vulnerability is CVE-2006-6603 since 12/15/2006. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 23870 (Yahoo! Messenger YMMAPI.YMailAttach ActiveX (ymmapi.dll) Overflow), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115480 (Yahoo! Messenger YMailAttach ActiveX Control Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at messenger.yahoo.com. The best possible mitigation is suggested to be upgrading to the latest version. Attack attempts may be identified with Snort ID 9794. In this case the pattern A|00|A|00|2|00|1|00|8|00|3|00|2|00|8|00|-|00|0|00|E|00|A|00|8|00|-|00|4|00|D|00|7|00|0|00|-|00|8|00|9|00|7|00|2|00|-|00|E|00|9|00|8|00|7|00|A|00|9|00|1|00|9|00|0|00|F|00|F|00|4|00| is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 9021.

The vulnerability is also documented in the databases at X-Force (30899), Tenable (23870), SecurityFocus (BID 21607†), OSVDB (32289†) and Secunia (SA23401†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 23870
Nessus Name: Yahoo! Messenger YMMAPI.YMailAttach ActiveX (ymmapi.dll) Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: messenger.yahoo.com

Snort ID: 9794
Snort Message: WEB-ACTIVEX YMMAPI.YMailAttach ActiveX clsid unicode access
Snort Pattern: 🔍
TippingPoint: 🔍
SourceFire IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

12/08/2006 🔍
12/08/2006 +0 days 🔍
12/15/2006 +7 days 🔍
12/15/2006 +0 days 🔍
12/15/2006 +0 days 🔍
12/15/2006 +0 days 🔍
12/15/2006 +0 days 🔍
12/15/2006 +0 days 🔍
12/15/2006 +0 days 🔍
12/19/2006 +3 days 🔍
12/20/2006 +1 days 🔍
06/15/2025 +6751 days 🔍

Sourcesinfo

Vendor: yahoo.com

Advisory: messenger.yahoo.com
Researcher: Peter Vreugdenhil (iDefense)
Organization: Yahoo!
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-6603 (🔍)
GCVE (CVE): GCVE-0-2006-6603
GCVE (VulDB): GCVE-100-2759
CERT: 🔍
X-Force: 30899
SecurityFocus: 21607 - Yahoo! Messenger YMailAttach ActiveX Control Remote Buffer Overflow Vulnerability
Secunia: 23401 - Yahoo! Messenger YMailAttach ActiveX Control Buffer Overflow, Highly Critical
OSVDB: 32289 - Yahoo! Messenger YMMAPI.YMailAttach ActiveX (ymmapi.dll) Overflow
SecurityTracker: 1017387
Vulnerability Center: 13402 - Yahoo! Messenger YMMAPI.YMailAttach Buffer Overflow, Medium
Vupen: ADV-2006-5016

Entryinfo

Created: 12/20/2006 09:58
Updated: 06/15/2025 01:21
Changes: 12/20/2006 09:58 (98), 07/12/2019 09:56 (1), 07/22/2024 18:12 (17), 06/15/2025 01:21 (2)
Complete: 🔍
Cache ID: 216:0E0:103

Be aware that VulDB is the high quality source for vulnerability data.

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