PT-2019-2044 · Cisco · Cisco Asa+1

Published 2019-05-01 · Updated 2023-08-15 · CVE-2018-15388

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Adaptive Security Appliance (ASA) Software (affected versions not specified) Cisco Firepower Threat Defense (FTD) Software (affected versions not specified)

Description A vulnerability in the WebVPN login process could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for existing WebVPN login operations. An attacker could exploit this vulnerability by sending multiple WebVPN login requests to the device, resulting in a denial of service (DoS) condition.

Recommendations For Cisco Adaptive Security Appliance (ASA) Software, consider restricting access to the WebVPN login process until a patch is available. For Cisco Firepower Threat Defense (FTD) Software, consider disabling the WebVPN login functionality as a temporary workaround until a patch is available. Avoid sending multiple WebVPN login requests to the device to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

BDU:2019-01789

CVE-2018-15388

Affected Products

Cisco Asa

Cisco Ftd

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-sd-cpu-dos · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-15388 · Security Note
• https://bdu.fstec.ru/vul/2019-01789 · Security Note
• https://osv.dev/vulnerability/CVE-2018-15388 · Vendor Advisory
• https://t.me/cvenotify/56500 · Telegram Post