CVE-2017-6779 Information

Description

Multiple Cisco products are affected by a vulnerability in local file management for certain system log files of Cisco collaboration products that could allow an unauthenticated remote attacker to cause high disk utilization resulting in a denial of service (DoS) condition. The vulnerability occurs because a certain system log file does not have a maximum size restriction. Therefore the file is allowed to consume the majority of available disk space on the appliance. An attacker could exploit this vulnerability by sending crafted remote connection requests to the appliance. Successful exploitation could allow the attacker to increase the size of a system log file so that it consumes most of the disk space. The lack of available disk space could lead to a DoS condition in which the application functions could operate abnormally making the appliance unstable. This vulnerability affects the following Cisco Voice Operating System (VOS)-based products: Emergency Responder Finesse Hosted Collaboration Mediation Fulfillment MediaSense Prime License Manager SocialMiner Unified Communications Manager (UCM) Unified Communications Manager IM and Presence Service (IM&P - earlier releases were known as Cisco Unified Presence) Unified Communication Manager Session Management Edition (SME) Unified Contact Center Express (UCCx) Unified Intelligence Center (UIC) Unity Connection Virtualized Voice Browser. This vulnerability also affects Prime Collaboration Assurance and Prime Collaboration Provisioning. Cisco Bug IDs: CSCvd10872 CSCvf64322 CSCvf64332 CSCvi29538 CSCvi29543 CSCvi29544 CSCvi29546 CSCvi29556 CSCvi29571 CSCvi31738 CSCvi31741 CSCvi31762 CSCvi31807 CSCvi31818 CSCvi31823.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5