CVE-2020-17470

mediumPriorität · verfolgen · 22OT-Risiko · erhöhtStack-Kampagne · AMNESIA:33EPSS 0.021 · 82. PerzentilDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.10% (82nd) EPSS

CVSS 5 · medium

Is it mine?

28 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · cisa_csaf_ot

EPSS · bewertet 2026-10-27

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.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

BehobenFNETcisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
BehobenNut/Netcisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
Behobenopen-iscsicisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
BehobenpicoTCP (EOL)cisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
BehobenpicoTCP-NGcisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
BehobenuIP (EOL)cisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
BehobenuIP-Contiki-NGcisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08
BehobenuIP-Contiki-OS (end-of-life [EOL])cisa_csaf_ot
Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
https://yanzi.dev/#/security/advisories/2020-12-08

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

5.3

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.04mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · CISA US

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-330USprimärCWE-20US

betroffene Produkte (28)

Betroffene Produkte und Versionsbereiche.

Open Source TCP/IP Stackalle Versionencert_bundDEcpe:/a:open_source:tcpip_stack:-
SUSE Linuxalle Versionencert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxalle Versionencert_bundDEcpe:/o:canonical:ubuntu_linux:-
Unify OpenScape 4000alle Versionencert_bundDEcpe:/h:unify:openscape_4000:-
Unify OpenScape Alarm Responsealle Versionencert_bundDEcpe:/h:unify:openscape_alarm_response:-
Unify OpenScape Businessalle Versionencert_bundDEcpe:/a:unify:openscape_business:-
Unify OpenScape Common Management Platformalle Versionencert_bundDEcpe:/a:unify:openscape_common_management_platform:-
Unify OpenScape Cordless IPalle Versionencert_bundDEcpe:/a:unify:openscape_cordless_ip:-
Unify OpenScape Desk Phonealle Versionencert_bundDEcpe:/h:unify:openscape_deskphone:-
Unify OpenScape Xpertalle Versionencert_bundDEcpe:/h:unify:openscape_xpert:-
FNET: Version 4.6.3alle Versionencisa_csaf_otUS
Nut/Net: Version 5.1 and prioralle Versionencisa_csaf_otUS
open-iscsi: Version 2.1.12 and prioralle Versionencisa_csaf_otUS
picoTCP (EOL): Version 1.7.0 and prioralle Versionencisa_csaf_otUS
picoTCP-NG: Version 1.7.0 and prioralle Versionencisa_csaf_otUS
uIP (EOL): Version 1.0 and prioralle Versionencisa_csaf_otUS
uIP-Contiki-NG: Version 4.5 and prioralle Versionencisa_csaf_otUS
uIP-Contiki-OS (end-of-life [EOL]): Version 3.0 and prioralle Versionencisa_csaf_otUS
multiple open source FNETalle Versionencisa_csaf_otUS
multiple open source Nut/Net≤ 5.1cisa_csaf_otUS

20 von 28 angezeigt

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

WID-SEC-W-2022-1044TCP/IP Stack: Mehrere SchwachstellenDeutsch2020-12-08csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in TCP/IP Stack ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, einen Denial of Service Angriff durchzuführen, vertrauliche Daten einzusehen oder Daten zu manipulieren.
ICSA-20-343-01Multiple Embedded TCP/IP Stacks2020-12-08icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow attackers to corrupt memory, put devices into infinite loops, access unauthorized data, and/or poison DNS cache.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd cert_bund cisa_csaf_ot NVD CVE.org MITRE

veröffentlicht 2020-12-11geändert 2026-06-17

verwandt (573)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2019-5420US	critical9.8OT kritisch	89.3% (100th)	Exploit	2019-03-27
A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. Thi…
CVE-2021-34646US	critical9.8OT hoch	50.9% (99th)	Exploit	2021-08-30
Versions up to, and including, 5.4.3, of the Booster for WooCommerce WordPress plugin are vulnerable to authentication bypass via the process_email_verification function due to a r…
CVE-2018-17888US	critical9.8OT hoch	29.6% (98th)	Exploit	2018-10-12
NUUO CMS all versions 3.1 and prior, The application uses a session identification mechanism that could allow attackers to obtain the active session ID, which could allow arbitrary…
CVE-2017-6026US	critical9.1OT hoch	31.8% (98th)	Exploit	2017-06-30
A Use of Insufficiently Random Values issue was discovered in Schneider Electric Modicon PLCs Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware…
CVE-2022-36536US	critical9.8OT hoch	4.85% (92nd)	Exploit	2022-09-16
An issue in the component post_applogin.php of Super Flexible Software GmbH & Co. KG Syncovery 9 for Linux v9.47x and below allows attackers to escalate privileges via creating cra…

+568 weitere

Referenzen (11)

Externe Belege — Patches, Meldungen, Analysen.

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