National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0410 Detail

Current Description

A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.6 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H (V3 legend)
Impact Score: 4.0
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/105098 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041535 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-dos Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Uncontrolled Resource Consumption ('Resource Exhaustion') (CWE-400)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:cisco:web_security_appliance:9.1.1-074:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:9.1.2-010:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:9.1.2-022:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:9.1.2-039:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:10.1.0-204:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:10.1.1-235:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:10.5.1-270:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:10.5.1-296:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:10.5.2-042:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:web_security_appliance:11.0.0-641:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0410
NVD Published Date:
08/15/2018
NVD Last Modified:
10/16/2018