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8.6highHigh

CVE-2018-15454

Cisco Adaptive Security Appliance Software

A vulnerability in the Session Initiation Protocol (SIP) inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload or trigger high CPU, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of SIP traffic. An attacker could exploit this vulnerability by sending SIP requests designed to specifically trigger this issue at a high rate across an affected device. Software updates that address this vulnerability are not yet available.

Exploitation status

  • A vendor advisory or patch reference has been published.

What the metrics mean

  • It is reachable over a network, without needing local access.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
8.6 (v3.0)
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness
CWE-20
Assigned by
psirt@cisco.com

Dates

Published
2018-11-01
Last modified
2026-08-11
Sources
NVD

Affected products

  • Cisco Adaptive Security Appliance Software9.4 - 9.4.4.27, 9.6 - 9.6.4.18, 9.8 - 9.8.3.16, 9.9 - 9.9.2.32, 9.10 - 9.10.1.2
  • Cisco Secure Firewall Threat Defense6.1.0 - 6.1.0.7, 6.2.0 - 6.2.0.6, 6.2.2 - 6.2.2.4, 6.2.3 - 6.2.3.7

As listed in the NVD configuration data. Not a statement about your estate.

References