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CVE-2019-12654 Details

Description

A vulnerability in the common Session Initiation Protocol (SIP) library of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on an internal data structure. An attacker could exploit this vulnerability by sending a sequence of malicious SIP messages to an affected device. An exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the iosd process. This triggers a reload of the device.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:8.6 HIGHVector: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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URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-dos	CVE	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-dos	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
cisco ios xe	15.6(1)s4.2 16.3.8 16.9.1
CPE cpe:2.3:o:cisco:ios_xe:15.6(1)s4.2:::::::* cpe:2.3:o:cisco:ios_xe:16.3.8:::::::* cpe:2.3:o:cisco:ios_xe:16.9.1:::::::* Remediation No remediation found in references.
cisco 1000 integrated services router	All versions
CPE cpe:2.3:h:cisco:1000_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100 integrated services router	All versions
CPE cpe:2.3:h:cisco:1100_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4000 integrated services router	All versions
CPE cpe:2.3:h:cisco:4000_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4221 integrated services router	All versions
CPE cpe:2.3:h:cisco:4221_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4321 integrated services router	All versions
CPE cpe:2.3:h:cisco:4321_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4331 integrated services router	All versions
CPE cpe:2.3:h:cisco:4331_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4351 integrated services router	All versions
CPE cpe:2.3:h:cisco:4351_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4431 integrated services router	All versions
CPE cpe:2.3:h:cisco:4431_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4451-x integrated services router	All versions
CPE cpe:2.3:h:cisco:4451-x_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco asr 1000	All versions
CPE cpe:2.3:h:cisco:asr_1000:-:::::::* Remediation No remediation found in references.
cisco asr 1001-hx	All versions
CPE cpe:2.3:h:cisco:asr_1001-hx:-:::::::* Remediation No remediation found in references.
cisco asr 1001-x	All versions
CPE cpe:2.3:h:cisco:asr_1001-x:-:::::::* Remediation No remediation found in references.
cisco asr 1002-hx	All versions
CPE cpe:2.3:h:cisco:asr_1002-hx:-:::::::* Remediation No remediation found in references.
cisco asr 1002-x	All versions
CPE cpe:2.3:h:cisco:asr_1002-x:-:::::::* Remediation No remediation found in references.
cisco cloud services router 1000v	All versions
CPE cpe:2.3:h:cisco:cloud_services_router_1000v:-:::::::* Remediation No remediation found in references.
cisco integrated services virtual router	All versions
CPE cpe:2.3:h:cisco:integrated_services_virtual_router:-:::::::* Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
Oct 4, 2019	Initial Analysis	[email protected]

CVE-2019-12654 Details

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