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CVE-2023-20115

MEDIUMCVSS 5.4/10EPSS 0.44%

Last modified

CVE-2023-20115 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A vulnerability in the SFTP server implementation for Cisco Nexus 3000 Series Switches and 9000 Series Switches in standalone NX-OS mode could allow an authenticated, remote attacker to download or overwrite files from the underlying operating system of an affected device. This vulnerability is due to a logic error when verifying the user role when an SFTP connection is opened to an affected device. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

A vulnerability in the SFTP server implementation for Cisco Nexus 3000 Series Switches and 9000 Series Switches in standalone NX-OS mode could allow an authenticated, remote attacker to download or overwrite files from the underlying operating system of an affected device. This vulnerability is due to a logic error when verifying the user role when an SFTP connection is opened to an affected device. An attacker could exploit this vulnerability by connecting and authenticating via SFTP as a valid, non-administrator user. A successful exploit could allow the attacker to read or overwrite files from the underlying operating system with the privileges of the authenticated user. There are workarounds that address this vulnerability.

Metrics

CVSS 3.1
5.4/10

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

EPSS Probability
0.44%

35.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoNx-Os9.2\(1\)
CiscoNx-Os9.2\(2\)
CiscoNx-Os9.2\(2t\)
CiscoNx-Os9.2\(2v\)
CiscoNx-Os9.2\(3\)
CiscoNx-Os9.2\(4\)
CiscoNx-Os9.3\(1\)
CiscoNx-Os9.3\(2\)
CiscoNx-Os9.3\(3\)
CiscoNx-Os9.3\(4\)
CiscoNx-Os9.3\(5\)
CiscoNx-Os9.3\(6\)
CiscoNx-Os9.3\(7\)
CiscoNx-Os9.3\(7a\)
CiscoNx-Os9.3\(8\)
CiscoNx-Os9.3\(9\)
CiscoNx-Os9.3\(10\)
CiscoNx-Os9.3\(11\)
CiscoNx-Os10.1\(1\)
CiscoNx-Os10.1\(2\)
CiscoNx-Os10.1\(2t\)
CiscoNx-Os10.2\(1\)
CiscoNx-Os10.2\(1q\)
CiscoNx-Os10.2\(2\)
CiscoNx-Os10.2\(3\)
CiscoNx-Os10.2\(3t\)
CiscoNx-Os10.2\(4\)
CiscoNx-Os10.2\(5\)
CiscoNx-Os10.3\(1\)
CiscoNx-Os10.3\(2\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-20115?
A vulnerability in the SFTP server implementation for Cisco Nexus 3000 Series Switches and 9000 Series Switches in standalone NX-OS mode could allow an authenticated, remote attacker to download or overwrite files from the underlying operating system of an affected device. This vulnerability is due to a logic error when verifying the user role when an SFTP connection is opened to an affected device. An attacker could exploit this vulnerability by connecting and authenticating via SFTP as a valid, non-administrator user. A successful exploit could allow the attacker to read or overwrite files from the underlying operating system with the privileges of the authenticated user. There are workarounds that address this vulnerability.
How severe is CVE-2023-20115?
CVE-2023-20115 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20115?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-20115?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST