VDB-135121 · CVE-2019-1811 · BID 108425

Cisco NX-OS Image Signature Verification signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco NX-OS. It has been rated as critical. This affects an unknown function of the component Image Signature Verification. This manipulation causes signature verification. This vulnerability is handled as CVE-2019-1811. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Cisco NX-OS (Router Operating System) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component Image Signature Verification. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerability exists because software digital signatures are not properly verified during CLI command execution. An attacker could exploit this vulnerability to install an unsigned software image on an affected device.

The bug was discovered 05/15/2019. The weakness was released 05/15/2019 as cisco-sa-20190515-nxos-sisv2 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2019-1811 since 12/06/2018. An attack has to be approached locally. The successful exploitation requires a single authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/21/2023).

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

Entries connected to this vulnerability are available at VDB-135122 and VDB-135123. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.2
VulDB Temp Score: 4.2
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 🔍
09/21/2023 +1589 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190515-nxos-sisv2
Status: Confirmed

CVE: CVE-2019-1811 (🔍)
GCVE (CVE): GCVE-0-2019-1811
GCVE (VulDB): GCVE-100-135121
SecurityFocus: 108425

See also: 🔍

Entryinfo

Created: 05/16/2019 08:39
Updated: 09/21/2023 10:46
Changes: 05/16/2019 08:39 (58), 06/12/2020 21:23 (1), 09/21/2023 10:41 (3), 09/21/2023 10:46 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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