VDB-125707 · CVE-2018-0395 · BID 105674

Cisco FXOS LLDP input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Cisco FXOS. Affected is an unknown function of the component LLDP. This manipulation causes input validation. This vulnerability is tracked as CVE-2018-0395. The attack is only possible within the local network. No exploit exists.

Detailsinfo

A vulnerability has been found in Cisco FXOS (affected version unknown) and classified as problematic. Affected by this vulnerability is an unknown functionality of the component LLDP. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. 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. As an impact it is known to affect availability. The summary by CVE is:

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.

The bug was discovered 10/17/2018. The weakness was disclosed 10/17/2018 as cisco-sa-20181017-fxnx-os-dos as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2018-0395 since 11/26/2017. The attack can only be done within the local network. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/30/2023).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105674†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2017 🔍
10/17/2018 +324 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/18/2018 +1 days 🔍
05/30/2023 +1685 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20181017-fxnx-os-dos
Status: Confirmed

CVE: CVE-2018-0395 (🔍)
GCVE (CVE): GCVE-0-2018-0395
GCVE (VulDB): GCVE-100-125707
SecurityFocus: 105674 - Cisco FXOS and NX-OS Software Fabric Services CVE-2018-0395 Denial of Service Vulnerability
SecurityTracker: 1041919

Entryinfo

Created: 10/18/2018 06:44
Updated: 05/30/2023 08:36
Changes: 10/18/2018 06:44 (58), 04/05/2020 08:50 (3), 05/30/2023 08:36 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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