Vulnerability Name:

CVE-2019-1980 (CCN-165416)

Assigned:2018-12-06
Published:2019-08-16
Updated:2019-11-08
Summary:A vulnerability in the protocol detection component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper detection of the initial use of a protocol on a nonstandard port. An attacker could exploit this vulnerability by sending traffic on a nonstandard port for the protocol in use through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious requests to protected systems that would otherwise be blocked. Once the initial protocol flow on the nonstandard port is detected, future flows on the nonstandard port will be successfully detected and handled as configured by the applied policy.
CVSS v3 Severity:5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/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): Low
Availibility (A): None
5.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N)
5.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/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): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-287
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2019-1980

Source: XF
Type: UNKNOWN
cisco-cve20191980-sec-bypass(165416)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190816-ftd-nspd
Cisco Firepower Threat Defense Software Nonstandard Protocol Detection Bypass Vulnerability

Source: CISCO
Type: Vendor Advisory
20190816 Cisco Firepower Threat Defense Software Nonstandard Protocol Detection Bypass Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:firepower_management_center:*:*:*:*:*:*:*:* (Version >= 2.9.12 and <= 2.9.12.15)
  • OR cpe:/a:cisco:firepower_management_center:*:*:*:*:*:*:*:* (Version >= 2.9.13 and <= 2.9.13.6)
  • OR cpe:/a:cisco:firepower_management_center:*:*:*:*:*:*:*:* (Version >= 2.9.14.0 and <= 2.9.14.5)
  • OR cpe:/a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_services_software_for_asa:*:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_services_software_for_asa:5.4.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco firepower management center *
    cisco firepower management center *
    cisco firepower management center *
    cisco firepower management center 2.9.15
    cisco firepower management center 2.9.16
    cisco firepower services software for asa *
    cisco firepower threat defense *
    cisco firepower threat defense software *
    cisco firepower services software for asa 5.4.0