Skype up to 1.4.0.83 Client Communication numeric error

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

Summaryinfo

A vulnerability has been found in Skype and classified as critical. Affected by this vulnerability is an unknown functionality of the component Client Communication Handler. This manipulation causes numeric error. This vulnerability is tracked as CVE-2005-3267. The attack is possible to be carried out remotely. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Skype (Unified Communication Software). Affected by this vulnerability is an unknown part of the component Client Communication Handler. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in Skype client before 1.4.x.84 on Windows, before 1.3.x.17 on Mac OS, before 1.2.x.18 on Linux, and 1.1.x.6 and earlier allows remote attackers to cause a denial of service (crash) via crafted network data with a large Object Counter value, which leads to a resultant heap-based buffer overflow.

The bug was discovered 10/18/2005. The weakness was disclosed 10/25/2005 by EADS Corporate Research Center with Skype (Website). The advisory is shared at skype.com. This vulnerability is known as CVE-2005-3267 since 10/20/2005. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

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 7 days. During that time 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 38480 (Skype Technologies Skype Networking Routine Heap Overflow Vulnerability).

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 (22850), Tenable (21451), SecurityFocus (BID 15192†), OSVDB (20306†) and Secunia (SA17305†). The entries VDB-1836 and VDB-1838 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

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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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

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: 🔍

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

10/18/2005 🔍
10/20/2005 +2 days 🔍
10/25/2005 +5 days 🔍
10/25/2005 +0 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 🔍
11/06/2005 +5 days 🔍
05/13/2006 +188 days 🔍
11/22/2024 +6768 days 🔍

Sourcesinfo

Advisory: skype.com
Researcher: EADS Corporate Research Center
Organization: Skype
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-3267 (🔍)
GCVE (CVE): GCVE-0-2005-3267
GCVE (VulDB): GCVE-100-1837
CERT: 🔍
X-Force: 22850 - Skype client UDP buffer overflow, High Risk
SecurityFocus: 15192 - Skype Technologies Skype Networking Routine Heap Overflow Vulnerability
Secunia: 17305 - Skype Multiple Buffer Overflow Vulnerabilities, Highly Critical
OSVDB: 20306 - Skype Crafted UDP Packet Remote Overflow
Vulnerability Center: 9546 - Skype Client DoS Buffer Overflow via Large Object Counter Value, Medium
Vupen: ADV-2005-2197

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

Entryinfo

Created: 10/31/2005 09:16
Updated: 11/22/2024 04:22
Changes: 10/31/2005 09:16 (102), 07/05/2019 06:40 (2), 11/22/2024 04:22 (19)
Complete: 🔍
Cache ID: 216:750:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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