Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-3878

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
17/03/2017
Last modified:
20/04/2025

Description

A Denial of Service vulnerability in the Telnet remote login functionality of Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a Telnet process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. 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: CSCux46778. Known Affected Releases: 7.0(3)I3(0.170). Known Fixed Releases: 7.0(3)I3(1) 7.0(3)I3(0.257) 7.0(3)I3(0.255) 7.0(3)I2(2e) 7.0(3)F1(1.22) 7.0(3)F1(1).

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x
5.30
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:7.0\(3\)i3\(0.170\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92160yc_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92300yc_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92304qc_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9236c_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9272q_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-ex_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93120tx_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93128tx_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93180lc-ex_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93180yc-ex_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9332pq_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9336pq_aci_spine_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9372px-e_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9372px_switch:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools