CVEvulnerability
CVE-2018-0476
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-10-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 7.1 HIGH — AV:N/AC:M/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-399
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 SIP packets in transit while NAT is performed on an affected device. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted SIP packets via UDP port 5060 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.
Affected configurations
• cisco ios xe 15.5\(3\)s5.1
• cisco ios xe 15.5\(3\)s6.1
• cisco ios xe 16.6.2
Related
Weakness · not in database (1)
References
- http://www.securityfocus.com/bid/105419 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041734 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041737 Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sip-alg Vendor Advisory
- http://www.securityfocus.com/bid/105419 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041734 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041737 Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sip-alg Vendor Advisory