Cisco NX-OS on Nexus 9000 Trusted Platform Module information disclosure
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
3.5 | $0-$5k | 0.00 |
A vulnerability was found in Cisco NX-OS on Nexus 9000 (Router Operating System) (the affected version unknown). It has been rated as problematic. This issue affects an unknown part of the component Trusted Platform Module. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:
A vulnerability in the Trusted Platform Module (TPM) functionality of software for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, local attacker with physical access to view sensitive information on an affected device. The vulnerability is due to a lack of proper data-protection mechanisms for disk encryption keys that are used within the partitions on an affected device hard drive. An attacker could exploit this vulnerability by obtaining physical access to the affected device to view certain cleartext keys. A successful exploit could allow the attacker to execute a custom boot process or conduct further attacks on an affected device.
The bug was discovered 05/01/2019. The weakness was presented 05/03/2019 as cisco-sa-20190501-aci-unmeasur as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2019-1589 since 12/06/2018. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.
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 $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316438 (Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Multiple Vulnerabilities(cisco-sa-20190501-aci-filter-query,cisco-sa-20190501-aci-unmeasured-boot)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
See 134332 for similar entry.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 3.5VulDB Meta Temp Score: 3.5
VulDB Base Score: 2.4
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 4.6
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
12/06/2018 🔍05/01/2019 🔍
05/01/2019 🔍
05/03/2019 🔍
05/03/2019 🔍
06/06/2020 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-20190501-aci-unmeasur
Status: Confirmed
CVE: CVE-2019-1589 (🔍)
SecurityFocus: 108175 - Cisco Nexus 9000 Series Fabric Switches CVE-2019-1589 Information Disclosure Vulnerability
See also: 🔍
Entry
Created: 05/03/2019 21:59Updated: 06/06/2020 20:57
Changes: 05/03/2019 21:59 (63), 06/06/2020 20:57 (3)
Complete: 🔍
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