What is the CVSS score of CVE-2019-1814?

CVE-2019-1814 has a CVSS 3.1 base score of 8.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H. EPSS exploitation probability: 2.1%.

Sf302 08Pp Firmware CVE-2019-1814

HIGH

Uncontrolled Resource Consumption (CWE-400)

2019-05-16 psirt@cisco.com

Denial Of Service Cisco Sf302 08Pp Firmware Sf302 08Mpp Firmware Sg300 10Pp Firmware Sg300 10Mpp Firmware Sf300 24Pp Firmware Sf300 48Pp Firmware Sg300 28Pp Firmware Sf300 08 Firmware Sf300 48P Firmware Sg300 10Mp Firmware Sg300 10P Firmware Sg300 10 Firmware Sg300 28P Firmware Sf300 24P Firmware Sf302 08Mp Firmware Sg300 28 Firmware Sf300 48 Firmware Sg300 20 Firmware Sf302 08P Firmware Sg300 52 Firmware Sf300 24 Firmware Sf302 08 Firmware Sf300 24Mp Firmware Sg300 10Sfp Firmware Sg300 28Mp Firmware Sg300 52P Firmware Sg300 52Mp Firmware

8.6

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.6 HIGH

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

May 16, 2019 - 00:29 nvd

HIGH 8.6

DescriptionNVD

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.

AnalysisAI

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. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. 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. Affected products include: Cisco Sf302-08Pp Firmware, Cisco Sf302-08Mpp Firmware, Cisco Sg300-10Pp Firmware, Cisco Sg300-10Mpp Firmware, Cisco Sf300-24Pp Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.