CVE-2019-12654 : A vulnerability in the common Session Initiation Protocol (SIP) library of Cisco

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.

Published 2019-09-25 21:15:11

Updated 2023-05-22 18:57:25

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Memory CorruptionDenial of service

Products affected by CVE-2019-12654

Cisco » Ios Xe » Version: 16.3.8
cpe:2.3:o:cisco:ios_xe:16.3.8:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 1000 Integrated Services Router » Version: N/A
When used together with: Cisco » 1100 Integrated Services Router » Version: N/A
When used together with: Cisco » 4000 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4321 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4351 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4451-x Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1000 » Version: N/A
When used together with: Cisco » Asr 1001-hx » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-hx » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » Integrated Services Virtual Router » Version: N/A
Cisco » Ios Xe » Version: 16.9.1
cpe:2.3:o:cisco:ios_xe:16.9.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 1000 Integrated Services Router » Version: N/A
When used together with: Cisco » 1100 Integrated Services Router » Version: N/A
When used together with: Cisco » 4000 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4321 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4351 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4451-x Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1000 » Version: N/A
When used together with: Cisco » Asr 1001-hx » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-hx » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » Integrated Services Virtual Router » Version: N/A
Cisco » Ios Xe » Version: 15.6(1)s4.2
cpe:2.3:o:cisco:ios_xe:15.6\(1\)s4.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 1000 Integrated Services Router » Version: N/A
When used together with: Cisco » 1100 Integrated Services Router » Version: N/A
When used together with: Cisco » 4000 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4321 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4351 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4451-x Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1000 » Version: N/A
When used together with: Cisco » Asr 1001-hx » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-hx » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » Integrated Services Virtual Router » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-12654

EPSS FAQ

1.16%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 77 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-12654

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-12654

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.
Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)

References for CVE-2019-12654

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-dos

Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability
Vendor Advisory

Jump to

Vulnerability Details : CVE-2019-12654

Products affected by CVE-2019-12654

Exploit prediction scoring system (EPSS) score for CVE-2019-12654

CVSS scores for CVE-2019-12654

CWE ids for CVE-2019-12654

References for CVE-2019-12654