VDB-4142 · OSVDB 65974

Skype Client 2.8 on Mac Chat Unicode unknown vulnerability

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.
5.1	$0-$5k	0.00

A vulnerability, which was classified as problematic, has been found in Skype Client 2.8 on Mac (Unified Communication Software). Affected by this issue is an unknown code block of the component Chat Unicode Handler. Impacted is confidentiality, and integrity.

The bug was discovered 05/09/2010. The weakness was disclosed 06/21/2010 by Marc Ruef with scip AG (Website). The advisory is available at scip.ch. The attack may be launched remotely. Technical details are unknown but a public exploit is available.

After even before and not, there has been an exploit disclosed. The exploit is available at developer.skype.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 43 days. During that time the estimated underground price was around $5k-$25k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at skype.com. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product.

securityfocus.com is providing further details.

Productinfo

Type

Unified Communication Software

Vendor

Skype

Name

Client

Version

License

free

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.4
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

Exploitinginfo

Class: Unknown
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Alternative
Status: 🔍

0-Day Time: 🔍

Patch: skype.com

Timelineinfo

05/09/2010 🔍
05/10/2010 +1 days 🔍
06/21/2010 +42 days 🔍
06/21/2010 +0 days 🔍
07/02/2010 +10 days 🔍
10/08/2018 +3020 days 🔍

Sourcesinfo

Advisory: scip.ch
Researcher: Marc Ruef
Organization: scip AG
Status: Not defined
OSVDB: 65974 - Skype for Mac OS X Chat Unicode Handling Remote DoS

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 06/21/2010 17:28
Updated: 10/08/2018 14:55
Changes: 06/21/2010 17:28 (60), 10/08/2018 14:55 (1)
Complete: 🔍
Cache ID: 18:E99:103