VDB-101562 · CVE-2017-6649 · BID 98531

Cisco NX-OS up to 7.1 on Nexus 5000 CLI command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$5k-$25k0.00

Summaryinfo

A vulnerability was found in Cisco NX-OS up to 7.1 on Nexus 5000. It has been declared as problematic. Affected is an unknown function of the component CLI. The manipulation results in command injection. This vulnerability is reported as CVE-2017-6649. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability was found in Cisco NX-OS up to 7.1 on Nexus 5000 (Router Operating System). It has been classified as problematic. Affected is some unknown processing of the component CLI. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the CLI of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus 5000 Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command. An exploit could allow the attacker to read or write arbitrary files at the user's privilege level outside of the user's path. Cisco Bug IDs: CSCvb86787.

The bug was discovered 05/17/2017. The weakness was disclosed 05/22/2017 as cisco-sa-20170517-nss as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2017-6649 since 03/09/2017. Local access is required to approach this attack. Required for exploitation is a authentication. 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 12/25/2020). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 4 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 316119 (Cisco Nexus 5000 Series Switches CLI Command Injection Vulnerability (cisco-sa-20170517-nss)).

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 98531†). The entry VDB-101563 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
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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OpenVAS ID: 103402
OpenVAS Name: Cisco Nexus 5000 Series Switches CLI Command Injection Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/09/2017 🔍
05/17/2017 +69 days 🔍
05/17/2017 +0 days 🔍
05/21/2017 +4 days 🔍
05/22/2017 +1 days 🔍
05/22/2017 +0 days 🔍
12/25/2020 +1313 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170517-nss
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6649 (🔍)
GCVE (CVE): GCVE-0-2017-6649
GCVE (VulDB): GCVE-100-101562
SecurityFocus: 98531 - Multiple Cisco Products CVE-2017-6649 Local Command Injection Vulnerability
OSVDB: - CVE-2017-6649 - Cisco - Nx-Os - Medium
SecurityTracker: 1038518

See also: 🔍

Entryinfo

Created: 05/22/2017 11:11
Updated: 12/25/2020 10:41
Changes: 05/22/2017 11:11 (75), 12/25/2020 10:41 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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