peter bassill · operator
$ cve CVE-2018-0155 JSON

CVE-2018-0155 KEV

8.6
HIGH · CVSS 3.1 · EPSS 7.7% (pctl 94)

Patch first

On CISA KEV — known exploited in the wild, due 2022-03-17.

Description

A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to cause a crash of the iosd process, causing a denial of service (DoS) condition. The vulnerability is due to insufficient error handling when the BFD header in a BFD packet is incomplete. An attacker could exploit this vulnerability by sending a crafted BFD message to or across an affected switch. A successful exploit could allow the attacker to trigger a reload of the system. This vulnerability affects Catalyst 4500 Supervisor Engine 6-E (K5), Catalyst 4500 Supervisor Engine 6L-E (K10), Catalyst 4500 Supervisor Engine 7-E (K10), Catalyst 4500 Supervisor Engine 7L-E (K10), Catalyst 4500E Supervisor Engine 8-E (K10), Catalyst 4500E Supervisor Engine 8L-E (K10), Catalyst 4500E Supervisor Engine 9-E (K10), Catalyst 4500-X Series Switches (K10), Catalyst 4900M Switch (K5), Catalyst 4948E Ethernet Switch (K5). Cisco Bug IDs: CSCvc40729.

Scoring

CVSS8.6 (HIGH, v3.1)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS7.74% — more likely to be exploited than 94% of all CVEs
WeaknessCWE-388
On CISA KEVyes — remediate by 2022-03-17
Public exploitnone known
Published2018-03-28
Last modified2026-06-17

CISA KEV

NameCisco Catalyst Bidirectional Forwarding Detection Denial-of-Service Vulnerability
Added2022-03-03
Due2022-03-17
Vendor / productCisco / Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches
Ransomware usenone reported

Affected (13)

VendorProduct
ciscocatalyst 4500 supervisor engine 6-e \(k5\)
ciscocatalyst 4500 supervisor engine 6l-e \(k10\)
ciscocatalyst 4500 supervisor engine 7-e \(k10\)
ciscocatalyst 4500 supervisor engine 7l-e \(k10\)
ciscocatalyst 4500-x series switches \(k10\)
ciscocatalyst 4500e supervisor engine 8-e \(k10\)
ciscocatalyst 4500e supervisor engine 8l-e \(k10\)
ciscocatalyst 4500e supervisor engine 9-e \(k10\)
ciscocatalyst 4900m switch \(k5\)
ciscocatalyst 4948e ethernet switch \(k5\)
ciscoios
ciscoios xe
rockwellautomationallen-bradley stratix 8300 industrial managed ethernet switch

References

→ the Explorer  ·  watch your stack  ·  NVD