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

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco ASA and Firepower Threat Defense. This affects an unknown function of the component Session Initiation Protocol. Performing a manipulation as part of SIP Request results in input validation. This vulnerability is reported as CVE-2018-15454. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

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.

It is declared as attacked. 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†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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License

Website

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

AVACAuCIA
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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: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

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 (🔍)
GCVE (CVE): GCVE-0-2018-15454
GCVE (VulDB): GCVE-100-126387
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 14:55
Updated: 07/04/2024 19:48
Changes: 11/01/2018 14:55 (69), 04/09/2020 14:41 (5), 06/04/2023 09:51 (4), 07/04/2024 19:48 (19)
Complete: 🔍
Submitter: FKJK
Cache ID: 216::103

Submitinfo

Accepted

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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