VDB-9439 · CVE-2013-4100 · OSVDB 95002

Cryptocat up to 2.0.21 Username denial of service

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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Cryptocat up to 2.0.21 and classified as problematic. Affected by this issue is some unknown functionality. This manipulation of the argument Username causes denial of service. The identification of this vulnerability is CVE-2013-4100. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cryptocat up to 2.0.21. It has been declared as critical. Affected by this vulnerability is an unknown part. The manipulation of the argument Username with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was shared 11/07/2012 by Mario Heiderich, Krzysztof Koktowicz and Maxim Rupp with Cure53 as confirmed bulletin (Website). It is possible to read the advisory at blog.crypto.cat. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2013-4100 since 06/12/2013. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.0.22 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (95002†). Additional details are provided at blog.crypto.cat. The entries VDB-9432, VDB-9433, VDB-9434 and VDB-9435 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Cryptocat

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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: Upgrade
Status: 🔍

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

Upgrade: Cryptocat 2.0.22

Timelineinfo

11/07/2012 🔍
11/07/2012 +0 days 🔍
06/12/2013 +217 days 🔍
07/11/2013 +29 days 🔍
05/18/2021 +2868 days 🔍

Sourcesinfo

Advisory: blog.crypto.cat
Researcher: Mario Heiderich, Krzysztof Koktowicz, Maxim Rupp
Organization: Cure53
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-4100 (🔍)
GCVE (CVE): GCVE-0-2013-4100
GCVE (VulDB): GCVE-100-9439
OSVDB: 95002

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 07/11/2013 11:41
Updated: 05/18/2021 14:27
Changes: 07/11/2013 11:41 (47), 03/19/2019 16:17 (2), 05/18/2021 14:23 (2), 05/18/2021 14:27 (16)
Complete: 🔍
Committer: olku
Cache ID: 216::103