High severity · published Nov 1, 2018
CVE-2018-15454
A vulnerability in the Session Initiation Protocol (SIP) inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…
8.6
CVSS
4.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)4.3% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Adaptive Security Appliance Software · Cisco
9.4 before 9.4.4.27; 9.6 before 9.6.4.18; 9.8 before 9.8.3.16; 9.9 before 9.9.2.32; 9.10 before 9.10.1.2 · source: NVD
SF
Secure Firewall Threat Defense · Cisco
6.1.0 before 6.1.0.7; 6.2.0 before 6.2.0.6; 6.2.2 before 6.2.2.4; 6.2.3 before 6.2.3.7 · source: NVD
Affected product
AS
Adaptive Security Appliance Software
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-15454
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-15454
Third Party Advisory
http://www.securityfocus.com/bid/105768
Third Party Advisory
http://www.securitytracker.com/id/1042129
Mitigation
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181031-asaftd-sip-dos
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