Vulnerability in Cisco iOS Xe Software
CVE-2018-0476
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.137 (96.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.137 · newest: 0.137 · change: 0.000
Affected products
- Cisco iOS Xe Software
- Cisco iOS Xe — versions 15.5\(3\)s5.1, 15.5(3)s5.1, 16.6.2
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926… (vendor-advisory, Vendor Advisory)
- www.securitytracker.com/id/1041734 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/105419 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1041737 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-0476?
- CVE-2018-0476 is a medium-severity vulnerability in Cisco iOS Xe Software, classified under CWE-399. CVSS score: 5.9/10. Published 2018-10-05.
- How severe is CVE-2018-0476?
- Medium severity. CVSS v3 base score is 5.9 out of 10.