Vulnerability Name:

CVE-2020-3359 (CCN-188811)

Assigned:2019-12-12
Published:2019-12-12
Updated:2021-08-06
Summary:A vulnerability in the multicast DNS (mDNS) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper validation of mDNS packets. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device. A successful exploit could cause a device to reload, resulting in a DoS condition.
CVSS v3 Severity:8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
8.6 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-3359

Source: XF
Type: UNKNOWN
cisco-cve20203359-dos(188811)

Source: CCN
Type: Cisco Security Advisory cisco-sa-mdns-dos-3tH6cA9J
Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers Multicast DNS Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20200924 Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers Multicast DNS Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:2610xm:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2611xm:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2612:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2620xm:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2621xm:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2650xm:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2651xm:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:2691:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_9800-cl:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_9800-l-c:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_9800-l-f:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:ios_xe_software:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe 16.12.1
    cisco 2610xm -
    cisco 2611xm -
    cisco 2612 -
    cisco 2620xm -
    cisco 2621xm -
    cisco 2650xm -
    cisco 2651xm -
    cisco 2691 -
    cisco catalyst 9800-40 -
    cisco catalyst 9800-80 -
    cisco catalyst 9800-cl -
    cisco catalyst 9800-l -
    cisco catalyst 9800-l-c -
    cisco catalyst 9800-l-f -
    cisco ios xe software *