Skype 0.98.0.04/0.98.0.27 callto:/ input validation

CVSS Meta Temp Score
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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-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Skype 0.98.0.04/0.98.0.27. Affected by this issue is some unknown functionality of the file callto:/. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2004-1777. Moreover, an exploit is present. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Skype 0.98.0.04/0.98.0.27 (Unified Communication Software) and classified as problematic. Affected by this issue is some unknown functionality of the file callto:/. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

A "range check error" in Skype for Windows before 0.98.0.28 allows local and remote attackers to cause a denial of service (application crash) via long command line arguments or a long callto:// URL, a different vulnerability than CVE-2004-1114.

The bug was discovered 02/09/2018. The weakness was disclosed 06/15/2004 (Website). The advisory is shared for download at skype.com. This vulnerability is handled as CVE-2004-1777 since 05/03/2005. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a exploit are known.

After before and not just, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 0.98.0.28 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (16405), SecurityFocus (BID 10513†), OSVDB (11860†), SecurityTracker (ID 1010490†) and Vulnerability Center (SBV-10611†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Skype 0.98.0.28
ISS Proventia IPS: 🔍

Timelineinfo

06/10/2004 🔍
06/14/2004 +4 days 🔍
06/15/2004 +1 days 🔍
06/15/2004 +0 days 🔍
11/16/2004 +153 days 🔍
12/31/2004 +44 days 🔍
12/31/2004 +0 days 🔍
05/03/2005 +123 days 🔍
03/12/2006 +313 days 🔍
04/14/2015 +3320 days 🔍
02/09/2018 +1032 days 🔍
06/15/2019 +491 days 🔍

Sourcesinfo

Advisory: skype.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-1777 (🔍)
GCVE (CVE): GCVE-0-2004-1777
GCVE (VulDB): GCVE-100-22892
X-Force: 16405
SecurityFocus: 10513 - Skype Technologies Skype CallTo URI Handler Buffer Overrun Vulnerability
OSVDB: 11860 - Skype Long callto:// Link Overflow DoS
SecurityTracker: 1010490
Vulnerability Center: 10611 - Skype DoS via \, High

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

Entryinfo

Created: 04/14/2015 13:32
Updated: 06/15/2019 10:36
Changes: 04/14/2015 13:32 (63), 06/15/2019 10:36 (8)
Complete: 🔍
Cache ID: 216:CEB:103

Once again VulDB remains the best source for vulnerability data.

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