Vulnerability Name:

CVE-2020-3527 (CCN-188771)

Assigned:2019-12-12
Published:2020-09-24
Updated:2020-10-07
Summary:A vulnerability in the Polaris kernel of Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to crash the device. The vulnerability is due to insufficient packet size validation. An attacker could exploit this vulnerability by sending jumbo frames or frames larger than the configured MTU size to the management interface of this device. A successful exploit could allow the attacker to crash the device fully before an automatic recovery.
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-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-3527

Source: XF
Type: UNKNOWN
cisco-cve20203527-dos(188771)

Source: CCN
Type: Cisco Security Advisory cisco-sa-JP-DOS-g5FfGm8y
Cisco Catalyst 9200 Series Switches Jumbo Frame Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20200924 Cisco Catalyst 9200 Series Switches Jumbo Frame Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:*:*:*:*:*:*:*:* (Version >= 16.9.0 and < 16.9.5)
  • OR cpe:/o:cisco:ios_xe:*:*:*:*:*:*:*:* (Version >= 16.12.0 and < 16.12.3)
  • AND
  • cpe:/h:cisco:catalyst_c9200l-24p-4g:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-24p-4x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-24pxg-2y:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-24pxg-4x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-24t-4g:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-24t-4x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-48p-4g:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-48p-4x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-48pxg-2y:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-48pxg-4x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-48t-4g:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:catalyst_c9200l-48t-4x:-:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    cisco ios xe *
    cisco ios xe *
    cisco catalyst c9200l-24p-4g -
    cisco catalyst c9200l-24p-4x -
    cisco catalyst c9200l-24pxg-2y -
    cisco catalyst c9200l-24pxg-4x -
    cisco catalyst c9200l-24t-4g -
    cisco catalyst c9200l-24t-4x -
    cisco catalyst c9200l-48p-4g -
    cisco catalyst c9200l-48p-4x -
    cisco catalyst c9200l-48pxg-2y -
    cisco catalyst c9200l-48pxg-4x -
    cisco catalyst c9200l-48t-4g -
    cisco catalyst c9200l-48t-4x -