VDB-2252 · CVE-2006-2312 · VU#466428

Skype up to 2.5.78 File Transfer URL code injection

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.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Skype. This affects an unknown function of the component File Transfer URL Handler. Such manipulation leads to code injection. This vulnerability is uniquely identified as CVE-2006-2312. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Skype (Unified Communication Software). Affected by this issue is an unknown code block of the component File Transfer URL Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality. CVE summarizes:

Argument injection vulnerability in the URI handler in Skype 2.0.*.104 and 2.5.*.0 through 2.5.*.78 for Windows allows remote authorized attackers to download arbitrary files via a URL that contains certain command-line switches.

The bug was discovered 05/19/2006. The weakness was disclosed 05/19/2006 by Brett Moore with Security-Assessment.com Ltd. (Website). The advisory is shared for download at skype.com. This vulnerability is handled as CVE-2006-2312 since 05/11/2006. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 21576 (Skype URI Handling Arbitrary File Download (uncredentialed check)), 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 r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38547 (Skype Technologies Skype URI Handling Remote File Download Vulnerability).

Upgrading to version 2.0.0.105 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at skype.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (26557), Tenable (21576), SecurityFocus (BID 18038†), OSVDB (25658†) and Secunia (SA20154†). techworld.com is providing further details. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Unified Communication Software

Name

Skype

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 21576
Nessus Name: Skype URI Handling Arbitrary File Download (uncredentialed check)
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: 🔍

Upgrade: Skype 2.0.0.105
Patch: skype.com

Timelineinfo

05/11/2006 🔍
05/19/2006 +8 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/22/2006 +2 days 🔍
05/22/2006 +0 days 🔍
06/22/2025 +6971 days 🔍

Sourcesinfo

Advisory: skype.com
Researcher: Brett Moore
Organization: Security-Assessment.com Ltd.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-2312 (🔍)
GCVE (CVE): GCVE-0-2006-2312
GCVE (VulDB): GCVE-100-2252
CERT: 🔍
X-Force: 26557 - Skype URI handler file access, Medium Risk
SecurityFocus: 18038 - Skype Technologies Skype URI Handling Remote File Download Vulnerability
Secunia: 20154 - Skype URL Handling File Disclosure Vulnerability, Moderately Critical
OSVDB: 25658 - Skype URL Handling Arbitrary File Disclosure
Vulnerability Center: 11524 - Skype URI Handler Vulnerability Allows Arbitrary Files Download, Medium
Vupen: ADV-2006-1871

scip Labs: https://www.scip.ch/en/?labs.20140918
Misc.: 🔍

Entryinfo

Created: 05/22/2006 11:59
Updated: 06/22/2025 03:41
Changes: 05/22/2006 11:59 (90), 06/18/2019 14:26 (1), 01/20/2025 08:12 (19), 06/22/2025 03:41 (2)
Complete: 🔍
Cache ID: 216::103