Vulnerability Name:

CVE-2021-40117 (CCN-212282)

Assigned:2021-10-27
Published:2021-10-27
Updated:2021-10-29
Summary:A vulnerability in SSL/TLS message handler for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because incoming SSL/TLS packets are not properly processed. An attacker could exploit this vulnerability by sending a crafted SSL/TLS packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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): Unchanged
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-2021-40117

Source: XF
Type: UNKNOWN
cisco-cve202140117-dos(212282)

Source: CCN
Type: Cisco Security Advisory cisco-sa-asaftd-dos-4ygzLKU9
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20211027 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version < 9.8.4.40)
  • OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.9.0 and < 9.12.4.26)
  • OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.13.0 and < 9.14.3.9)
  • OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.15.0 and < 9.15.1.17)
  • OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.16.0 and < 9.16.2.3)
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version < 6.2.3.17)
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.3.0 and < 6.4.0.13)
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.5.0 and < 6.6.5)
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.7.0 and < 6.7.0.3)
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 7.0.0 and < 7.0.1)

    • Configuration 2:
  • cpe:/o:cisco:asa_5512-x_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5512-x_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5512-x:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:cisco:asa_5505_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5505_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5505:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:cisco:asa_5515-x_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5515-x_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5515-x:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:cisco:asa_5525-x_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5525-x_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5525-x:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/o:cisco:asa_5545-x_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5545-x_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5545-x:-:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/o:cisco:asa_5555-x_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5555-x_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5555-x:-:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/o:cisco:asa_5580_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5580_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5580:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/o:cisco:asa_5585-x_firmware:009.009(002.085):*:*:*:*:*:*:*
  • OR cpe:/o:cisco:asa_5585-x_firmware:009.014(002.106):*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:asa_5585-x:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:adaptive_security_appliance_software:-:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco adaptive security appliance *
    cisco adaptive security appliance *
    cisco adaptive security appliance *
    cisco adaptive security appliance *
    cisco adaptive security appliance *
    cisco firepower threat defense *
    cisco firepower threat defense *
    cisco firepower threat defense *
    cisco firepower threat defense *
    cisco firepower threat defense *
    cisco asa 5512-x firmware 009.009(002.085)
    cisco asa 5512-x firmware 009.014(002.106)
    cisco asa 5512-x -
    cisco asa 5505 firmware 009.009(002.085)
    cisco asa 5505 firmware 009.014(002.106)
    cisco asa 5505 -
    cisco asa 5515-x firmware 009.009(002.085)
    cisco asa 5515-x firmware 009.014(002.106)
    cisco asa 5515-x -
    cisco asa 5525-x firmware 009.009(002.085)
    cisco asa 5525-x firmware 009.014(002.106)
    cisco asa 5525-x -
    cisco asa 5545-x firmware 009.009(002.085)
    cisco asa 5545-x firmware 009.014(002.106)
    cisco asa 5545-x -
    cisco asa 5555-x firmware 009.009(002.085)
    cisco asa 5555-x firmware 009.014(002.106)
    cisco asa 5555-x -
    cisco asa 5580 firmware 009.009(002.085)
    cisco asa 5580 firmware 009.014(002.106)
    cisco asa 5580 -
    cisco asa 5585-x firmware 009.009(002.085)
    cisco asa 5585-x firmware 009.014(002.106)
    cisco asa 5585-x -
    cisco adaptive security appliance software -
    cisco firepower threat defense software *