Skype up to 1.4.0.83 skype/callto URI memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Skype. Affected is an unknown function of the component skype/callto URI Handler. The manipulation results in memory corruption. This vulnerability is identified as CVE-2005-3265. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Skype (Unified Communication Software). Affected is some unknown functionality of the component skype/callto URI Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in Skype for Windows 1.1.x.0 through 1.4.x.83 allows remote attackers to execute arbitrary code via (1) callto:// and (2) skype:// links, or (3) a non-standard VCARD, possibly due to an underlying error in the SysUtils.WideFmtStr Delphi routine.

The weakness was released 10/25/2005 by Mark Rowe with Skype (Website). The advisory is shared for download at skype.com. This vulnerability is traded as CVE-2005-3265 since 10/20/2005. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

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 21451 (FreeBSD : skype -- multiple buffer overflow vulnerabilities (70fc13d9-4ab4-11da-932d-00055d790c25)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38479 (Skype Technologies Skype Multiple Buffer Overflow Vulnerabilities).

Upgrading 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. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (22848), Tenable (21451), SecurityFocus (BID 15190†), OSVDB (20308†) and Secunia (SA17305†). Entries connected to this vulnerability are available at VDB-1838 and VDB-1837. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: 21451
Nessus Name: FreeBSD : skype -- multiple buffer overflow vulnerabilities (70fc13d9-4ab4-11da-932d-00055d790c25)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 55778
OpenVAS Name: FreeBSD Ports: skype
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: skype.com

Timelineinfo

10/20/2005 🔍
10/25/2005 +5 days 🔍
10/25/2005 +0 days 🔍
10/26/2005 +0 days 🔍
10/27/2005 +1 days 🔍
10/31/2005 +4 days 🔍
11/01/2005 +1 days 🔍
05/13/2006 +193 days 🔍
06/29/2025 +6987 days 🔍

Sourcesinfo

Advisory: skype.com
Researcher: Mark Rowe
Organization: Skype
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-3265 (🔍)
GCVE (CVE): GCVE-0-2005-3265
GCVE (VulDB): GCVE-100-1836
CERT: 🔍
X-Force: 22848 - Skype URI buffer overflow, High Risk
SecurityFocus: 15190 - Skype Technologies Skype Multiple Buffer Overflow Vulnerabilities
Secunia: 17305 - Skype Multiple Buffer Overflow Vulnerabilities, Highly Critical
OSVDB: 20308 - Skype for Windows Crafted VCARD Handling Overflow
Vulnerability Center: 9628
Vupen: ADV-2005-2197

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

Entryinfo

Created: 10/31/2005 09:16
Updated: 06/29/2025 05:42
Changes: 10/31/2005 09:16 (90), 07/05/2019 06:37 (2), 06/16/2024 08:32 (17), 11/22/2024 04:22 (3), 06/29/2025 05:42 (2)
Complete: 🔍
Cache ID: 216:02D:103

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