CVE-2020-17470 - Vulnerability Details - OpenCVE

Description

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.

Published: 2020-12-11

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2020-9422	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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00446.

Key SSVC decision points have not yet been added.

References

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

History

No history.

Subscriptions

Butok Fnet

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-12-11T22:40:55.000Z

Updated: 2024-08-04T13:53:17.483Z

Reserved: 2020-08-10T00:00:00.000Z

Link: CVE-2020-17470

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-12-11T23:15:13.747

Modified: 2024-11-21T05:08:10.743

Link: CVE-2020-17470

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-330

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