VulnerabilityModified

CVE-2018-0410

HIGH 8.6EPSS 4.12%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.0: 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS: 4.12% probability · 90th percentile
CISA KEV: Not listed
Weakness: CWE-400
Affected: cisco/web security appliance
Source: psirt@cisco.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.