Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2017-6720

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
21/09/2017
Last modified:
20/04/2025

Description

A vulnerability in the Secure Shell (SSH) subsystem of Cisco Small Business Managed Switches software could allow an authenticated, remote attacker to cause a reload of the affected switch, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of SSH connections. An attacker could exploit this vulnerability by logging in to an affected switch via SSH and sending a malicious SSH message. This vulnerability affects the following Cisco products when SSH is enabled: Small Business 300 Series Managed Switches, Small Business 500 Series Stackable Managed Switches, 350 Series Managed Switches, 350X Series Stackable Managed Switches, 550X Series Stackable Managed Switches, ESW2 Series Advanced Switches. Cisco Bug IDs: CSCvb48377.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:L/Au:S/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

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

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:sf302-08pp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sf302-08pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf302-08mpp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sf302-08mpp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sg300-10pp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sg300-10pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sg300-10mpp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sg300-10mpp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf300-24pp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sf300-24pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf300-48pp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sf300-48pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sg300-28pp_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)
cpe:2.3:h:cisco:sg300-28pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:* 1.4.8.06 (excluding)

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


References to Advisories, Solutions, and Tools