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CVE-2019-1814

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
16/05/2019
Last modified:
16/10/2020

Description

A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could allow an unauthenticated, remote attacker to cause the device to become low on system memory, which in turn could lead to an unexpected reload of the device and result in a denial of service (DoS) condition on an affected device. The vulnerability is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the targeted device. A successful exploit could allow the attacker to cause an unexpected reload of the device.

Impact

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

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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

Base Score 3.x
8.60
Severity 3.x
HIGH
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:sf302-08pp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sf302-08pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf302-08mpp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sf302-08mpp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sg300-10pp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sg300-10pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sg300-10mpp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sg300-10mpp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf300-24pp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sf300-24pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf300-48pp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sf300-48pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sg300-28pp_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)
cpe:2.3:h:cisco:sg300-28pp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:* 1.4.10.6 (excluding)

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


References to Advisories, Solutions, and Tools