VDB-135072 · CVE-2019-1728 · BID 108391

Cisco NX-OS/FXOS Secure Configuration Validation signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical was found in Cisco NX-OS and FXOS. This vulnerability affects unknown code of the component Secure Configuration Validation. The manipulation results in signature verification. This vulnerability is reported as CVE-2019-1728. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Cisco NX-OS and FXOS (Router Operating System) (version unknown). Affected is an unknown function of the component Secure Configuration Validation. The manipulation with an unknown input leads to a signature verification vulnerability. CWE is classifying the issue as CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the Secure Configuration Validation functionality of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to run arbitrary commands at system boot time with the privileges of root. The vulnerability is due to a lack of proper validation of system files when the persistent configuration information is read from the file system. An attacker could exploit this vulnerability by authenticating to the device and overwriting the persistent configuration storage with malicious executable files. An exploit could allow the attacker to run arbitrary commands at system startup and those commands will run as the root user. The attacker must have valid administrative credentials for the device.

The bug was discovered 05/15/2019. The weakness was disclosed 05/15/2019 as cisco-sa-20190515-nxos-conf-by as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2019-1728 since 12/06/2018. The attack needs to be approached locally. The successful exploitation requires a authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/19/2023).

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CNA Base Score: 6.7
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

12/06/2018 🔍
05/15/2019 +160 days 🔍
05/15/2019 +0 days 🔍
05/16/2019 +1 days 🔍
09/19/2023 +1587 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190515-nxos-conf-by
Status: Confirmed

CVE: CVE-2019-1728 (🔍)
GCVE (CVE): GCVE-0-2019-1728
GCVE (VulDB): GCVE-100-135072
SecurityFocus: 108391

Entryinfo

Created: 05/16/2019 07:00
Updated: 09/19/2023 17:22
Changes: 05/16/2019 07:00 (57), 06/12/2020 16:18 (1), 09/19/2023 17:14 (3), 09/19/2023 17:22 (12)
Complete: 🔍
Cache ID: 216::103

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