8.6
HIGH
CVE-2020-3408
"Cisco Split DNS Regular Expression Engine Denial of Service"
Description

A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability occurs because the regular expression (regex) engine that is used with the Split DNS feature of affected releases may time out when it processes the DNS name list configuration. An attacker could exploit this vulnerability by trying to resolve an address or hostname that the affected device handles. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

INFO

Published Date :

Sept. 24, 2020, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 5:30 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-3408 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 ios_xe
2 Cisco ios
3 Cisco asr_1001
4 Cisco asr_1002
5 Cisco asr_1002-x
6 Cisco asr_1004
7 Cisco asr_1006
8 Cisco asr_1013
9 Cisco ws-c3850
10 Cisco 1100-4g_integrated_services_router
11 Cisco 1100-4gltegb_integrated_services_router
12 Cisco 1100-4gltena_integrated_services_router
13 Cisco 1100-4p_integrated_services_router
14 Cisco 1100-6g_integrated_services_router
15 Cisco 1100-8p_integrated_services_router
16 Cisco 1100-lte_integrated_services_router
17 Cisco 1100_integrated_services_router
18 Cisco 1101-4p_integrated_services_router
19 Cisco 1101_integrated_services_router
20 Cisco 1109-2p_integrated_services_router
21 Cisco 1109-4p_integrated_services_router
22 Cisco 1109_integrated_services_router
23 Cisco 1111x-8p_integrated_services_router
24 Cisco 111x_integrated_services_router
25 Cisco 1120_integrated_services_router
26 Cisco 1160_integrated_services_router
27 Cisco 4221_integrated_services_router
28 Cisco asr_1001-x
29 Cisco catalyst_9800-40
30 Cisco catalyst_9800-80
31 Cisco catalyst_9800-cl
32 Cisco catalyst_9800-l
33 Cisco catalyst_9800-l-c
34 Cisco catalyst_9800-l-f
35 Cisco 1111x_integrated_services_router
36 Cisco 4331_integrated_services_router
37 Cisco 4431_integrated_services_router
38 Cisco 4451_integrated_services_router
39 Cisco 4461_integrated_services_router
40 Cisco asr_1000-x
41 Cisco csr_1000v
42 Cisco catalyst_c9200-24p
43 Cisco catalyst_c9200-24t
44 Cisco catalyst_c9200-48p
45 Cisco catalyst_c9200-48t
46 Cisco catalyst_c9200l-24p-4g
47 Cisco catalyst_c9200l-24p-4x
48 Cisco catalyst_c9200l-24pxg-2y
49 Cisco catalyst_c9200l-24pxg-4x
50 Cisco catalyst_c9200l-24t-4g
51 Cisco catalyst_c9200l-24t-4x
52 Cisco catalyst_c9200l-48p-4g
53 Cisco catalyst_c9200l-48p-4x
54 Cisco catalyst_c9200l-48pxg-2y
55 Cisco catalyst_c9200l-48pxg-4x
56 Cisco catalyst_c9200l-48t-4g
57 Cisco catalyst_c9200l-48t-4x
58 Cisco catalyst_c9300-24p
59 Cisco catalyst_c9300-24s
60 Cisco catalyst_c9300-24t
61 Cisco catalyst_c9300-24u
62 Cisco catalyst_c9300-24ux
63 Cisco catalyst_c9300-48p
64 Cisco catalyst_c9300-48s
65 Cisco catalyst_c9300-48t
66 Cisco catalyst_c9300-48u
67 Cisco catalyst_c9300-48un
68 Cisco catalyst_c9300-48uxm
69 Cisco catalyst_c9300l-24p-4g
70 Cisco catalyst_c9300l-24p-4x
71 Cisco catalyst_c9300l-24t-4g
72 Cisco catalyst_c9300l-24t-4x
73 Cisco catalyst_c9300l-48p-4g
74 Cisco catalyst_c9300l-48p-4x
75 Cisco catalyst_c9300l-48t-4g
76 Cisco catalyst_c9300l-48t-4x
77 Cisco catalyst_c9500-12q
78 Cisco catalyst_c9500-16x
79 Cisco catalyst_c9500-24q
80 Cisco catalyst_c9500-24y4c
81 Cisco catalyst_c9500-32c
82 Cisco catalyst_c9500-32qc
83 Cisco catalyst_c9500-40x
84 Cisco catalyst_c9500-48y4c
85 Cisco asr1001-hx
86 Cisco asr1001-hx-rf
87 Cisco asr1001-x-rf
88 Cisco asr1001-x-ws
89 Cisco asr1002-hx
90 Cisco asr1002-hx-rf
91 Cisco asr1002-hx-ws
92 Cisco asr1002-x-rf
93 Cisco asr1002-x-ws
94 Cisco catalyst_c9404r
95 Cisco catalyst_c9407r
96 Cisco catalyst_c9410r
97 Cisco ws-c3650-12x48uq
98 Cisco ws-c3650-12x48ur
99 Cisco ws-c3650-12x48uz
100 Cisco ws-c3650-24pd
101 Cisco ws-c3650-24pdm
102 Cisco ws-c3650-24ps
103 Cisco ws-c3650-24td
104 Cisco ws-c3650-24ts
105 Cisco ws-c3650-48fd
106 Cisco ws-c3650-48fq
107 Cisco ws-c3650-48fqm
108 Cisco ws-c3650-48fs
109 Cisco ws-c3650-48pd
110 Cisco ws-c3650-48pq
111 Cisco ws-c3650-48ps
112 Cisco ws-c3650-48td
113 Cisco ws-c3650-48tq
114 Cisco ws-c3650-48ts
115 Cisco ws-c3650-8x24uq
116 Cisco ws-c3850-12s
117 Cisco ws-c3850-12x48u
118 Cisco ws-c3850-12xs
119 Cisco ws-c3850-24p
120 Cisco ws-c3850-24s
121 Cisco ws-c3850-24t
122 Cisco ws-c3850-24u
123 Cisco ws-c3850-24xs
124 Cisco ws-c3850-24xu
125 Cisco ws-c3850-48f
126 Cisco ws-c3850-48p
127 Cisco ws-c3850-48t
128 Cisco ws-c3850-48u
129 Cisco ws-c3850-48xs
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-2020-3408.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-splitdns-SPWqpdGW Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-splitdns-SPWqpdGW 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-2020-3408 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-3408 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-splitdns-SPWqpdGW
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    May. 23, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr1100-4gltena:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-4gltena_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 23, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr1100-lte:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-lte_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 23, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr1100-4gltegb:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-4gltegb_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 23, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr1100-6g:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-6g_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 23, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr1100-4g:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-4g_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 23, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr1100:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:integrated_services_router_4451:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4451_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:integrated_services_router_4331:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:integrated_services_router_4221:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:integrated_services_router_4431:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:integrated_services_router_4461:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 27, 2022

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:cisco:ios:15.8(3)m3:*:*:*:*:*:*:* OR *cpe:2.3:o:cisco:ios:15.8(3)m3:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 27, 2022

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:cisco:ios_xe:15.8(3)m3:*:*:*:*:*:*:* OR *cpe:2.3:o:cisco:ios_xe:15.8(3)m3:*:*:*:*:*:*:*
  • Initial Analysis by [email protected]

    Oct. 06, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-splitdns-SPWqpdGW No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-splitdns-SPWqpdGW Vendor Advisory
    Added CWE NIST CWE-400
    Added CPE Configuration AND OR *cpe:2.3:a:cisco:ios:15.8\(3\)m3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:ios_xe:15.8\(3\)m3:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asr1001-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1001-hx-rf:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1001-x-rf:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1001-x-ws:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1002-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1002-hx-rf:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1002-hx-ws:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1002-x-rf:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr1002-x-ws:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-cl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-l-c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9800-l-f:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200-24p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200-24t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200-48p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200-48t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-24p-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-24p-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-24pxg-2y:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-24pxg-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-24t-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-24t-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-48p-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-48p-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-48pxg-2y:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-48pxg-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-48t-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9200l-48t-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-24p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-24s:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-24t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-24u:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-24ux:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-48p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-48s:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-48t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-48u:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-48un:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300-48uxm:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-24p-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-24p-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-24t-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-24t-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-48p-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-48p-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-48t-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9300l-48t-4x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9404r:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9407r:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9410r:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-12q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-16x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-24q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-24y4c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-32c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-32qc:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-40x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_c9500-48y4c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:csr_1000v:*:*:*:*:*:*:*:* cpe:2.3:h:cisco:integrated_services_router_4221:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:integrated_services_router_4331:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:integrated_services_router_4431:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:integrated_services_router_4451:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:integrated_services_router_4461:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr1100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr1100-4g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr1100-4gltegb:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr1100-4gltena:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr1100-6g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr1100-lte:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:ws-c3650-12x48uq:-:*:*:*:*:*:*:* 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  • CVE Modified by [email protected]

    Sep. 24, 2020

    Action Type Old Value New Value
    Changed Description A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability occurs because the regular expression (regex) engine that is used with the Split DNS feature of affected releases may time out when it processes the DNS name list configuration. An attacker could exploit this vulnerability by trying to resolve an address or hostname that the affected device handles. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability occurs because the regular expression (regex) engine that is used with the Split DNS feature of affected releases may time out when it processes the DNS name list configuration. An attacker could exploit this vulnerability by trying to resolve an address or hostname that the affected device handles. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
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-2020-3408 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

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

0.15 }} 0.03%

score

0.52076

percentile

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