CVE-2018-0395 : A vulnerability in the Link Layer Discovery Protocol (LLDP) implementation for C

A vulnerability in the Link Layer Discovery Protocol (LLDP) implementation for Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when the device unexpectedly reloads. The vulnerability is due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface on the targeted device. A successful exploit could allow the attacker to cause the switch to reload unexpectedly.

Published 2018-10-17 19:29:00

Updated 2023-04-20 17:17:59

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Input validationDenial of service

Products affected by CVE-2018-0395

Cisco » Nx-os » Version: 6.0(4)
cpe:2.3:o:cisco:nx-os:6.0\(4\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Nexus 7000 10-slot » Version: N/A
When used together with: Cisco » Nexus 7000 18-slot » Version: N/A
When used together with: Cisco » Nexus 7000 4-slot » Version: N/A
When used together with: Cisco » Nexus 7000 9-slot » Version: N/A
When used together with: Cisco » Nexus 7700 10-slot » Version: N/A
When used together with: Cisco » Nexus 7700 18-slot » Version: N/A
When used together with: Cisco » Nexus 7700 2-slot » Version: N/A
When used together with: Cisco » Nexus 7700 6-slot » Version: N/A
Cisco » Nx-os » Version: 6.1(3)s2
cpe:2.3:o:cisco:nx-os:6.1\(3\)s2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Nexus 7000 10-slot » Version: N/A
When used together with: Cisco » Nexus 7000 18-slot » Version: N/A
When used together with: Cisco » Nexus 7000 4-slot » Version: N/A
When used together with: Cisco » Nexus 7000 9-slot » Version: N/A
When used together with: Cisco » Nexus 7700 10-slot » Version: N/A
When used together with: Cisco » Nexus 7700 18-slot » Version: N/A
When used together with: Cisco » Nexus 7700 2-slot » Version: N/A
When used together with: Cisco » Nexus 7700 6-slot » Version: N/A
Cisco » Nx-os » Version: R231
cpe:2.3:o:cisco:nx-os:r231:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Firepower 9300 » Version: N/A
Cisco » Nx-os » Version: 12.3(1e)
cpe:2.3:o:cisco:nx-os:12.3\(1e\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Firepower 9300 » Version: N/A
Cisco » Nx-os » Version: 3.2(3d)c
cpe:2.3:o:cisco:nx-os:3.2\(3d\)c:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » UCS » Version: N/A
Cisco » Firepower Extensible Operating System » Version: R231
cpe:2.3:o:cisco:firepower_extensible_operating_system:r231:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Firepower 9300 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2018-0395

EPSS FAQ

0.35%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 54 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-0395

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.9	LOW	AV:A/AC:M/Au:N/C:N/I:N/A:P	5.5	2.9	NIST
Access Vector: Adjacent Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.3	MEDIUM	CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	1.6	3.6	NIST
Attack Vector: Adjacent Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
8.8	HIGH	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	2.8	5.9	Cisco Systems, Inc.
Attack Vector: Adjacent Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2018-0395

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)

References for CVE-2018-0395

http://www.securityfocus.com/bid/105674

Cisco FXOS and NX-OS Software Fabric Services CVE-2018-0395 Denial of Service Vulnerability
Third Party Advisory;VDB Entry
http://www.securitytracker.com/id/1041919

Cisco NX-OS LLDP TLV Processing Bugs Let Remote Users Cause the Target Service to Crash - SecurityTracker
Third Party Advisory;VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-fxnx-os-dos

Cisco FXOS and NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2018-0395

Products affected by CVE-2018-0395

Exploit prediction scoring system (EPSS) score for CVE-2018-0395

CVSS scores for CVE-2018-0395

CWE ids for CVE-2018-0395

References for CVE-2018-0395