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.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 13 products from cisco, from cisco, from cisco and 10 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-09-25T20:15:10.353
2024-11-21T04:23:15.173
Modified
CVSSv3.1: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xe | 15.4\(3\)s | Yes |
| Operating System | cisco | ios_xe | 15.5\(3\)s | Yes |
| Operating System | cisco | ios_xe | 15.6\(1\)s | Yes |
| Operating System | cisco | ios_xe | 16.3.1 | Yes |
| Operating System | cisco | ios_xe | 16.4.1 | Yes |
| Operating System | cisco | ios_xe | 16.5.1 | Yes |
| Operating System | cisco | ios_xe | 16.6.1 | Yes |
| Operating System | cisco | ios_xe | 16.7.1 | Yes |
| Operating System | cisco | ios_xe | 16.8.1 | Yes |
| Operating System | cisco | ios_xe | 16.9.1 | Yes |
| Operating System | cisco | ios_xe | 16.10.1 | Yes |
| Operating System | cisco | ios_xe | 16.11.1 | Yes |
| Operating System | cisco | ios_xe | 16.12.1 | Yes |
| Hardware | cisco | 1100-4p | - | No |
| Hardware | cisco | 1100-8p | - | No |
| Hardware | cisco | 1101-4p | - | No |
| Hardware | cisco | 1109-2p | - | No |
| Hardware | cisco | 1109-4p | - | No |
| Hardware | cisco | 1111x-8p | - | No |
| Hardware | cisco | 4221_integrated_services_router | - | No |
| Hardware | cisco | 4331_integrated_services_router | - | No |
| Hardware | cisco | csr_1000v | - | No |
| Hardware | cisco | encs_5100 | - | No |
| Hardware | cisco | encs_5400 | - | No |
| Hardware | cisco | isrv | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.