Home/CVE/A vulnerability in Stormshield Network Security could allow an attacker to trigger a protection related to ARP/NDP table
CVE

CVE-2021-3384

A vulnerability in Stormshield Network Security could allow an attacker to trigger a protection related to ARP/NDP table

A vulnerability in Stormshield Network Security could allow an attacker to trigger a protection related to ARP/NDP tables management, which would temporarily prevent the system to contact new hosts via IPv4 or IPv6. This affects versions 2.0.0 to 2.7.7, 2.8.0 to 2.16.0, 3.0.0 to 3.7.16, 3.8.0 to 3.11.4, and 4.0.0 to 4.1.5. Fixed in versions 2.7.8, 3.7.17, 3.11.5, and 4.2.0.

MEDIUM · CVSS 5.3 EPSS 0.00377
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
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Affected Products & Versions

5
stormshield network security>= 2.0.0 and < 2.7.8
stormshield network security>= 2.8.0 and <= 2.16.0
stormshield network security>= 3.0.0 and <= 3.7.17
stormshield network security>= 3.8.0 and <= 3.11.5
stormshield network security>= 4.0.0 and < 4.1.5
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Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Mar 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://advisories.stormshield.eu/2020-049/Vendor Advisory
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