8.6
HIGH
CVE-2019-1814
Cisco Small Business 300 Series Managed Switches DHCP TFTP Memory Corruption Denial of Service
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.

INFO

Published Date :

May 16, 2019, 12:29 a.m.

Last Modified :

Oct. 16, 2020, 3:30 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

4.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-1814 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco sf300-08_firmware
2 Cisco sf302-08_firmware
3 Cisco sf302-08p_firmware
4 Cisco sf302-08pp_firmware
5 Cisco sf302-08mp_firmware
6 Cisco sf302-08mpp_firmware
7 Cisco sf300-24_firmware
8 Cisco sf300-24p_firmware
9 Cisco sf300-24pp_firmware
10 Cisco sf300-24mp_firmware
11 Cisco sf300-48_firmware
12 Cisco sf300-48p_firmware
13 Cisco sf300-48pp_firmware
14 Cisco sg300-10_firmware
15 Cisco sg300-10sfp_firmware
16 Cisco sg300-10p_firmware
17 Cisco sg300-10pp_firmware
18 Cisco sg300-10mp_firmware
19 Cisco sg300-10mpp_firmware
20 Cisco sg300-20_firmware
21 Cisco sg300-28_firmware
22 Cisco sg300-28p_firmware
23 Cisco sg300-28pp_firmware
24 Cisco sg300-28mp_firmware
25 Cisco sg300-52_firmware
26 Cisco sg300-52p_firmware
27 Cisco sg300-52mp_firmware
: Total Affected Vendor : 1 | Products : 27
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-1814.

URL 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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-1814 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-1814 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Oct. 16, 2020

    Action Type Old Value New Value
    Removed CWE NIST CWE-401
    Added CWE NIST CWE-770
  • Modified Analysis by [email protected]

    Sep. 02, 2020

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
    Removed CWE NIST CWE-400
    Added CWE NIST CWE-401
    Changed CPE Configuration AND OR *cpe:2.3:o:cisco:sx300_firmware:1.4.0.88:*:*:*:*:*:*:* *cpe:2.3:o:cisco:sx300_firmware:1.4.9.4:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:sf300-08:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-48:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-48p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-48pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08mpp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10mpp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10sfp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-20:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-52:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-52m:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-52p:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:cisco:sf302-08pp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf302-08pp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf302-08mpp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf302-08mpp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-10pp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-10pp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-10mpp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-10mpp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-24pp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-24pp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-48pp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-48pp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-28pp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-28pp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-08:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-48p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-48p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-10mp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-10mp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-10p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-10p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-10_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-10:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-28p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-28p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-24p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-24p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf302-08mp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf302-08mp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-28_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-28:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-48_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-48:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-20_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-20:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf302-08p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf302-08p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-52_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-52:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-24_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-24:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf302-08_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf302-08:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sf300-24mp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sf300-24mp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-10sfp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-10sfp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-28mp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-28mp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-52p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-52p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sg300-52mp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.10.6 OR cpe:2.3:h:cisco:sg300-52mp:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Cisco Systems, Inc. AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
    Added CWE Cisco Systems, Inc. CWE-400
  • Initial Analysis by [email protected]

    May. 21, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.securityfocus.com/bid/108344 No Types Assigned http://www.securityfocus.com/bid/108344 Third Party Advisory, VDB Entry
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp Vendor Advisory
    Added CWE CWE-400
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:sx300_firmware:1.4.0.88:*:*:*:*:*:*:* *cpe:2.3:o:cisco:sx300_firmware:1.4.9.4:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:sf300-08:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-24pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-48:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-48p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf300-48pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08mpp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sf302-08pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10mpp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-10sfp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-20:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28mp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-28pp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-52:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-52m:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:sg300-52p:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 16, 2019

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/108344 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-1814 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-1814 weaknesses.

CAPEC-147: XML Ping of the Death XML Ping of the Death CAPEC-227: Sustained Client Engagement Sustained Client Engagement CAPEC-492: Regular Expression Exponential Blowup Regular Expression Exponential Blowup CAPEC-125: Flooding Flooding CAPEC-130: Excessive Allocation Excessive Allocation CAPEC-147: XML Ping of the Death XML Ping of the Death CAPEC-197: Exponential Data Expansion Exponential Data Expansion CAPEC-229: Serialized Data Parameter Blowup Serialized Data Parameter Blowup CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-469: HTTP DoS HTTP DoS CAPEC-482: TCP Flood TCP Flood CAPEC-486: UDP Flood UDP Flood CAPEC-487: ICMP Flood ICMP Flood CAPEC-488: HTTP Flood HTTP Flood CAPEC-489: SSL Flood SSL Flood CAPEC-490: Amplification Amplification CAPEC-491: Quadratic Data Expansion Quadratic Data Expansion CAPEC-493: SOAP Array Blowup SOAP Array Blowup CAPEC-494: TCP Fragmentation TCP Fragmentation CAPEC-495: UDP Fragmentation UDP Fragmentation CAPEC-496: ICMP Fragmentation ICMP Fragmentation CAPEC-528: XML Flood XML Flood
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.16 }} 0.00%

score

0.50347

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: