Cisco NX-OS Image Signature Verification privilege escalation

A vulnerability was found in Cisco NX-OS (Router Operating System) (affected version not known) and classified as critical. Affected by this issue is a part of the component Image Signature Verification. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-269. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 05/15/2019 as cisco-sa-20190515-nxos-sisv2 as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is handled as CVE-2019-1812 since 12/06/2018. Local access is required to approach this attack. A single authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/16/2019).

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

The entries 135121 and 135123 are pretty similar.

Vendor

• Cisco

Name

• NX-OS

• ?

• ?

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

VulDB Base Score: 4.2
VulDB Temp Score: 4.2
VulDB Vector: ?
VulDB Reliability: ?

VulDB Base Score: ?
VulDB Temp Score: ?
VulDB Reliability: ?
Class: Privilege escalation (CWE-269)
Local: Yes
Remote: No

Availability: ?
Status: Not defined

Price Prediction: ?
Current Price Estimation: ?

Threat Intelligenceinfoedit

Threat: ?
Adversaries: ?
Geopolitics: ?
Economy: ?
Predictions: ?
Remediation: ?Recommended: no mitigation known
0-Day Time: ?12/06/2018 CVE assigned
05/15/2019 +160 days Advisory disclosed
05/16/2019 +1 days VulDB entry created
05/16/2019 +0 days VulDB last updateAdvisory: cisco-sa-20190515-nxos-sisv2
Status: Confirmed

CVE: CVE-2019-1812 (?)
See also: ?

Created: 05/16/2019 08:39 AM
Complete: ?

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