VDB-134335 · CVE-2019-1592 · Qualys 316433

Cisco NX-OS on Nexus 9000 ACI Mode access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$5k-$25k0.00

Summaryinfo

A vulnerability was found in Cisco NX-OS on Nexus 9000. It has been classified as critical. This vulnerability affects unknown code of the component ACI Mode. This manipulation causes access control. This vulnerability is registered as CVE-2019-1592. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Cisco NX-OS on Nexus 9000 (Router Operating System) (unknown version). Affected by this vulnerability is an unknown code block of the component ACI Mode. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the background operations functionality of Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an authenticated, local attacker to gain elevated privileges as root on an affected device. The vulnerability is due to insufficient validation of user-supplied files on an affected device. An attacker could exploit this vulnerability by logging in to the CLI of the affected device and creating a crafted file in a specific directory on the filesystem. A successful exploit could allow the attacker to execute arbitrary operating system commands as root on an affected device.

The bug was discovered 05/01/2019. The weakness was published 05/03/2019 as cisco-sa-20190501-aci-hw-clock as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2019-1592 since 12/06/2018. Attacking locally is a requirement. The requirement for exploitation is a single 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 09/12/2023). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316433 (Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Multiple Vulnerabilities (cisco-sa-20190501-aci-insecure-fabric) (cisco-sa-20190501-aci-hw-clock-util)(cisco-sa-20190501-nexus9k-rpe)).

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

Similar entries are available at VDB-134334 and VDB-134357. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

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

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/06/2018 🔍
05/01/2019 +146 days 🔍
05/03/2019 +2 days 🔍
05/03/2019 +0 days 🔍
09/12/2023 +1593 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190501-aci-hw-clock
Status: Confirmed

CVE: CVE-2019-1592 (🔍)
GCVE (CVE): GCVE-0-2019-1592
GCVE (VulDB): GCVE-100-134335
See also: 🔍

Entryinfo

Created: 05/03/2019 22:00
Updated: 09/12/2023 08:15
Changes: 05/03/2019 22:00 (62), 06/06/2020 21:08 (1), 09/12/2023 08:15 (12)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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