CVE-2020-3538: data center Input Validation Flaw — Fix

Description

A vulnerability in a certain REST API endpoint of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to perform a path traversal attack on an affected device. The vulnerability is due to insufficient path restriction enforcement. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to overwrite or list arbitrary files on the affected device.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

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CVSS v3.1 Score

4.6

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-22 Path Traversal

Affected Products

Vendor	Product	Versions
cisco	data_center_network_manager	< 11.4\(1\)

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-pa-trav-bMdfSTTq

Other References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-authbypass-YVJzqgk2 https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-tls-dos-xW53TBhb

Frequently Asked Questions

What is CVE-2020-3538? +

A vulnerability in a certain REST API endpoint of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to perform a path traversal attack on an affected device. The vulnerability is due to insufficient path restriction enforcement. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to overwrite or list arbitrary files on the affected device.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. It has a CVSS v3.1 base score of 4.6 (MEDIUM).

How severe is CVE-2020-3538? +

CVE-2020-3538 has a CVSS v3.1 score of 4.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2020-3538? +

CVE-2020-3538 affects products from cisco, specifically: data_center_network_manager. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2020-3538? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2020-3538