CVE-2017-3879

Name: CVE-2017-3879
Creator: NVD / NIST
Published: 2017-03-17T22:59:00.577+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.05%

Last modified Jun 17, 2026

CVE-2017-3879 is a vulnerability of currently unknown severity. A Denial of Service vulnerability in the remote login functionality for Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. EPSS estimates a 2.05% chance of exploitation in the next 30 days.

Description

A Denial of Service vulnerability in the remote login functionality for Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. The attacker could use either a Telnet or an SSH client for the remote login attempt. Affected Products: This vulnerability affects Cisco Nexus 9000 Series Switches that are running Cisco NX-OS Software and are configured to allow remote Telnet connections to the device. More Information: CSCuy25824. Known Affected Releases: 7.0(3)I3(1) 8.3(0)CV(0.342) 8.3(0)CV(0.345). Known Fixed Releases: 8.3(0)CV(0.362) 8.0(1) 7.0(3)IED5(0.19) 7.0(3)IED5(0) 7.0(3)I4(1) 7.0(3)I4(0.8) 7.0(3)I2(2e) 7.0(3)F1(1.22) 7.0(3)F1(1) 7.0(3)F1(0.230).

Metrics

EPSS Probability

2.05%

78.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Cisco	Nx-Os	7.0\(3\)i3\(0.170\)
Cisco	Nx-Os	8.3\(0\)cv\(0.342\)
Cisco	Nx-Os	8.3\(0\)cv\(0.345\)

References

http://www.securityfocus.com/bid/96920Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038046
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-nss1Vendor Advisory
http://www.securityfocus.com/bid/96920Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038046
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-nss1Vendor Advisory

Timeline

Published: Mar 17, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-3879?

How severe is CVE-2017-3879?

Severity scoring for CVE-2017-3879 is pending analysis. The EPSS model estimates a 2.05% probability of exploitation in the next 30 days.

How do I fix CVE-2017-3879?

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-2017-3879?

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

Scan your code now

Source: NVD / NIST