Cisco ASA/Firepower Threat Defense Session Initiation Protocol SIP Request input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

A vulnerability classified as problematic has been found in Cisco ASA and Firepower Threat Defense (Firewall Software) (affected version not known). This affects some unknown functionality of the component Session Initiation Protocol. The manipulation as part of a SIP Request leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

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.

The bug was discovered 10/31/2018. The weakness was disclosed 10/31/2018 as cisco-sa-20181031-asaftd-sip-d as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2018-15454 since 08/17/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118822 (Cisco Firepower Threat Defense (FTD) Adaptive Security Appliance Denial of Service Vulnerability (cisco-sa-20181031-asaftd-sip-dos)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316351 (Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software Denial of Service Vulnerability(cisco-sa-20181031-asaftd-sip-dos)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Zero-Day.cz (518), Tenable (118822) and SecurityFocus (BID 105768†).

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118822
Nessus Name: Cisco Firepower Threat Defense (FTD) Adaptive Security Appliance Denial of Service Vulnerability (cisco-sa-20181031-asaftd-sip-dos)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/17/2018 🔍
10/31/2018 +75 days 🔍
10/31/2018 +0 days 🔍
10/31/2018 +0 days 🔍
10/31/2018 +0 days 🔍
11/01/2018 +0 days 🔍
11/01/2018 +0 days 🔍
11/08/2018 +7 days 🔍
07/04/2024 +2065 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20181031-asaftd-sip-d
Status: Confirmed

CVE: CVE-2018-15454 (🔍)
SecurityFocus: 105768 - Multiple Cisco Products CVE-2018-15454 Denial of Service Vulnerability
SecurityTracker: 1042129

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/01/2018 02:55 PM
Updated: 07/04/2024 07:48 PM
Changes: 11/01/2018 02:55 PM (69), 04/09/2020 02:41 PM (5), 06/04/2023 09:51 AM (4), 07/04/2024 07:48 PM (19)
Complete: 🔍
Submitter: FKJK
Cache ID: 18:7EA:40

Submitinfo

Accepted

  • Submit #41: Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software Denial of Service Vulnerability (by FKJK)

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