CVE-2019-12646
Cisco IOS XE Software NAT SIP ALG Denial of Service Vulnerability
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.
INFO
Published Date :
Sept. 25, 2019, 8:15 p.m.
Last Modified :
May 22, 2023, 6:57 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-12646.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-alg | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-12646 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-12646 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CWE Cisco Systems, Inc. CWE-399 -
Initial Analysis by [email protected]
Oct. 04, 2019
Action Type Old Value New Value 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 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 Added CWE CWE-665 Added CPE Configuration 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:16.8.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.9.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:1100-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1100-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1101-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1109-2p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1109-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1111x-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:encs_5100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:encs_5400:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isrv:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 25, 2019
Action Type Old Value New Value Changed 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. 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.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-12646 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-12646
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} -0.05%
score
0.43655
percentile