VulnerabilityModified

CVE-2018-0476

MEDIUM 5.9EPSS 13.7%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 13.7%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.0: 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 13.70% probability · 96th percentile
CISA KEV: Not listed
Weakness: CWE-399
Affected: cisco/ios xe
Source: psirt@cisco.com

References

http://www.securityfocus.com/bid/105419Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041734Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sip-algVendor Advisory
http://www.securityfocus.com/bid/105419Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041734Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sip-algVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.