NVD - CVE-2019-12646

CVE-2019-12646 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Current Description

A vulnerability in the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper processing of transient SIP packets on which NAT is performed on an affected device. An attacker could exploit this vulnerability by using UDP port 5060 to send crafted SIP packets through an affected device that is performing NAT for SIP packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Source: MITRE
View Analysis Description

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 8.6 HIGH

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-alg	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-665	Improper Initialization	NIST
CWE-399	Resource Management Errors	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )

cpe:2.3:o:cisco:ios_xe:15.4\(3\)s:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:15.5\(3\)s:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:15.6\(1\)s:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.3.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.4.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.5.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.6.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.7.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.8.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.9.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.10.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.11.1:::::::* Show Matching CPE(s)
cpe:2.3:o:cisco:ios_xe:16.12.1:::::::* Show Matching CPE(s)
Running on/with
cpe:2.3:h:cisco:1100-4p:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:1100-8p:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:1101-4p:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:1109-2p:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:1109-4p:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:1111x-8p:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:csr_1000v:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:encs_5100:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:encs_5400:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:isr_4221:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:isr_4331:-:::::::* Show Matching CPE(s)
cpe:2.3:h:cisco:isrv:-:::::::* Show Matching CPE(s)

Change History

3 change records found - show changes

Initial Analysis - 10/4/2019 3:56:51 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 1355 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:ios_xe:15.4\(3\)s::::::: cpe:2.3:o:cisco:ios_xe:15.5\(3\)s::::::: cpe:2.3:o:cisco:ios_xe:15.6\(1\)s::::::: cpe:2.3:o:cisco:ios_xe:16.3.1::::::: cpe:2.3:o:cisco:ios_xe:16.4.1::::::: cpe:2.3:o:cisco:ios_xe:16.5.1::::::: cpe:2.3:o:cisco:ios_xe:16.6.1::::::: cpe:2.3:o:cisco:ios_xe:16.7.1::::::: *cpe:2.3:o:cisco:ios_xe:16
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE		CWE-665
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-alg No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-alg Vendor Advisory

CVE Modified by MITRE - 9/25/2019 5:15:10 PM

Action

Type

Old Value

New Value

Changed

Description

Record truncated, showing 500 of 646 characters. View Entire Change Record

A vulnerability in the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload.  The vulnerability is due to improper processing of transient SIP packets on which NAT is performed on an affected device. An attacker could exploit this vulnerability by using UDP port 5060 to send crafted SIP packets through an affected device that is performing

Record truncated, showing 500 of 645 characters. View Entire Change Record

A vulnerability in the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper processing of transient SIP packets on which NAT is performed on an affected device. An attacker could exploit this vulnerability by using UDP port 5060 to send crafted SIP packets through an affected device that is performing N

Quick Info

CVE Dictionary Entry:
CVE-2019-12646
NVD Published Date:
09/25/2019
NVD Last Modified:
10/09/2019

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