PT-2018-1183 · Cisco · Cisco Ios+1

Published 2018-03-28 · Updated 2019-10-09 · CVE-2018-0189

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco IOS Software and Cisco IOS XE Software (affected versions not specified)

Description A vulnerability in the Forwarding Information Base (FIB) code could allow an unauthenticated, network attacker to cause a denial of service (DoS) condition. The issue is due to a limitation in the way the FIB internally represents recursive routes. An attacker could exploit this by injecting routes into the routing protocol with a specific recursive pattern, potentially causing an affected device to reload and creating a DoS condition. The attacker must be in a position on the network to inject recursive routes with a specific pattern.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-399

Related Identifiers

BDU:2018-00641

CVE-2018-0189

Affected Products

Cisco Ios

Cisco Ios Xe

References · 5

• https://osv.dev/vulnerability/CVE-2018-0189 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-0189 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-FIB-dos · Vendor Advisory
• https://bdu.fstec.ru/vul/2018-00641 · Security Note
• http://securityfocus.com/bid/103548 · Note