National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-1814 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


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): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/108344 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Uncontrolled Resource Consumption ('Resource Exhaustion') (CWE-400)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:cisco:sx300_firmware:1.4.0.88:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:cisco:sx300_firmware:1.4.9.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:sf300-08:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-24:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-24mp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-24p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-24pp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-48:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-48p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf300-48pp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf302-08:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf302-08mp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf302-08mpp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf302-08p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sf302-08pp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-10:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-10mp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-10mpp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-10p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-10pp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-10sfp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-20:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-28:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-28mp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-28p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-28pp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-52:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-52m:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:sg300-52p:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-1814
NVD Published Date:
05/15/2019
NVD Last Modified:
05/21/2019