5.3 - CVE-2020-17470

Executive Summary

Informations
Name	CVE-2020-17470	First vendor Publication	2020-12-11
Vendor	Cve	Last vendor Modification	2023-10-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Overall CVSS Score	5.3
Base Score	5.3	Environmental Score	5.3
impact SubScore	1.4	Temporal Score	5.3
Exploitabality Sub Score	3.9

Attack Vector	Network	Attack Complexity	Low
Privileges Required	None	User Interaction	None
Scope	Unchanged	Confidentiality Impact	None
Integrity Impact	Low	Availability Impact	None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:P/A:N)
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

An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17470

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-330	Use of Insufficiently Random Values

CPE : Common Platform Enumeration

Type	Description	Count
Application	Butok Fnet cpe:2.3:a:butok:fnet:4.6.3:::::::*	1

Sources (Detail)

Source	Url
CONFIRM	http://fnet.sourceforge.net/manual/fnet_history.html
MISC	https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 https://www.kb.cert.org/vuls/id/815128

Alert History

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Date	Informations
2023-10-13 21:27:52	Multiple Updates
2023-10-13 00:27:47	Multiple Updates
2021-08-05 01:37:43	Multiple Updates
2021-07-21 17:23:09	Multiple Updates
2020-12-18 00:22:51	Multiple Updates
2020-12-14 17:22:47	Multiple Updates
2020-12-12 05:22:49	First insertion