Vulnerability CVE-2020-3191 - CERT Civis.Net

Vulnerability Name:

CVE-2020-3191 (CCN-181544)

Assigned:

2019-12-12

Published:

2020-05-06

Updated:

2021-08-12

Summary:

A vulnerability in DNS over IPv6 packet processing for Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper length validation of a field in an IPv6 DNS packet. An attacker could exploit this vulnerability by sending a crafted DNS query over IPv6, which traverses the affected device. An exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is specific to DNS over IPv6 traffic only.

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:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

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:

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2020-3191

Source: XF
Type: UNKNOWN
cisco-cve20203191-dos(181544)

Source: CCN
Type: Cisco Security Advisory cisco-sa-asaftd-ipv6-67pA658k
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IPv6 DNS Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20200506 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IPv6 DNS Denial of Service Vulnerability

Vulnerable Configuration:

Configuration 1:

cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.2.3 and < 6.2.3.16)

OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.3.0 and < 6.3.0.6)

OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.4.0 and < 6.4.0.6)

Configuration 2:

cpe:/o:cisco:asa_5505_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5505_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5505:-:*:*:*:*:*:*:*

Configuration 3:

cpe:/o:cisco:asa_5510_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5510_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5510:-:*:*:*:*:*:*:*

Configuration 4:

cpe:/o:cisco:asa_5512-x_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5512-x_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5512-x:-:*:*:*:*:*:*:*

Configuration 5:

cpe:/o:cisco:asa_5515-x_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5515-x_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5515-x:-:*:*:*:*:*:*:*

Configuration 6:

cpe:/o:cisco:asa_5520_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5520_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5520:-:*:*:*:*:*:*:*

Configuration 7:

cpe:/o:cisco:asa_5525-x_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5525-x_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5525-x:-:*:*:*:*:*:*:*

Configuration 8:

cpe:/o:cisco:asa_5540_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5540_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5540:-:*:*:*:*:*:*:*

Configuration 9:

cpe:/o:cisco:asa_5545-x_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5545-x_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5545-x:-:*:*:*:*:*:*:*

Configuration 10:

cpe:/o:cisco:asa_5550_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5550_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5550:-:*:*:*:*:*:*:*

Configuration 11:

cpe:/o:cisco:asa_5555-x_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5555-x_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5555-x:-:*:*:*:*:*:*:*

Configuration 12:

cpe:/o:cisco:asa_5580_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5580_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5580:-:*:*:*:*:*:*:*

Configuration 13:

cpe:/o:cisco:asa_5585-x_firmware:9.4(1):*:*:*:*:*:*:*

OR cpe:/o:cisco:asa_5585-x_firmware:96.4(0.42):*:*:*:*:*:*:*

AND

cpe:/h:cisco:asa_5585-x:-:*:*:*:*:*:*:*

Configuration 14:

cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.6 and < 9.6.4.36)

OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.8 and < 9.8.4.12)

OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.9 and < 9.9.2.66)

OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.10 and < 9.10.1.37)

OR cpe:/a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* (Version >= 9.12 and < 9.12.2.9)

Configuration CCN 1:

cpe:/a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

Denotes that component is vulnerable