VDB-135123 · CVE-2019-1813 · 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 identified as critical has been detected in Cisco NX-OS. Affected is an unknown function of the component Image Signature Verification. Performing a manipulation results in signature verification. This vulnerability was named CVE-2019-1813. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability was found in Cisco NX-OS (Router Operating System) (affected version not known). It has been classified as critical. This affects some unknown functionality of the component Image Signature Verification. 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. 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 presented 05/15/2019 as cisco-sa-20190515-nxos-sisv2 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2019-1813 since 12/06/2018. Attacking locally is a requirement. A authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing 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.

See VDB-135121 and VDB-135122 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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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-2019-1813 (🔍)
GCVE (CVE): GCVE-0-2019-1813
GCVE (VulDB): GCVE-100-135123
SecurityFocus: 108425

See also: 🔍

Entryinfo

Created: 05/16/2019 08:39
Updated: 09/21/2023 11:13
Changes: 05/16/2019 08:39 (57), 06/12/2020 21:30 (1), 09/21/2023 11:05 (3), 09/21/2023 11:13 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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