Vulnerability Name:

CVE-2020-3562 (CCN-190347)

Assigned:2019-12-12
Published:2020-10-21
Updated:2020-10-23
Summary:A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.
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:7.1 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
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-119
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-3562

Source: XF
Type: UNKNOWN
cisco-cve20203562-dos(190347)

Source: CCN
Type: Cisco Security Advisory cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yy
Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20201021 Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:firepower_threat_defense:6.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_threat_defense:6.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_threat_defense:6.5.0:*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:firepower_2110:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:firepower_2120:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:firepower_2130:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:firepower_2140:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco firepower threat defense 6.3.0
    cisco firepower threat defense 6.4.0
    cisco firepower threat defense 6.5.0
    cisco firepower 2110 -
    cisco firepower 2120 -
    cisco firepower 2130 -
    cisco firepower 2140 -