Executive Summary

Informations
Name CVE-2020-3191 First vendor Publication 2020-05-06
Vendor Cve Last vendor Modification 2023-08-16

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Overall CVSS Score 8.6
Base Score 8.6 Environmental Score 8.6
impact SubScore 4 Temporal Score 8.6
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Changed Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3191

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 170
Application 69
Os 688
Os 1

Snort® IPS/IDS

Date Description
2020-12-05 Cisco ASA and FTD IPv6 DNS request stack buffer overflow attempt
RuleID : 53867 - Revision : 1 - Type : PROTOCOL-DNS

Sources (Detail)

Source Url
CISCO https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...

Alert History

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Date Informations
2023-11-10 02:05:42
  • Multiple Updates
2023-09-19 13:06:05
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2023-08-16 21:28:32
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2023-08-16 13:00:07
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2023-08-13 01:55:00
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2023-08-12 13:14:19
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2023-08-12 01:20:07
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2023-08-11 13:07:19
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2023-08-11 01:20:46
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2023-08-07 01:54:15
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2023-08-06 13:05:33
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2023-08-06 01:19:56
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2023-08-05 01:54:22
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2023-08-04 13:05:54
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2023-08-04 01:20:15
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2023-07-15 01:56:16
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2023-07-14 13:05:55
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2023-07-14 01:20:04
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2023-03-31 01:58:45
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2023-03-29 12:52:35
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2023-03-29 02:08:29
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2023-03-28 12:20:18
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2022-11-22 01:50:50
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2022-10-12 01:50:35
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2022-10-11 12:58:48
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2022-10-11 01:19:52
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2021-08-13 00:23:08
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2021-05-04 13:51:19
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2021-04-22 03:02:59
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2020-12-05 21:23:47
  • Multiple Updates
2020-11-02 01:29:14
  • Multiple Updates
2020-10-29 01:28:55
  • Multiple Updates
2020-05-23 02:36:36
  • First insertion