CVE-2024-12378

On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.

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Published May 8, 2025 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Description

On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.

Affected Products

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

Vendor Product Default status Versions

Arista Networks

CloudVision Portal

unaffected

Version	Status	Constraints
`4.32.0`	affected	≤ 4.32.2F
`4.31.0`	affected	≤ 4.31.6M
`4.30.0`	affected	≤ 4.30.8M
`4.29.0`	affected	≤ 4.29.9M
`4.28.0`	affected	≤ 4.28.12M
`4.27.0`	affected	≤ 4.27.12M

No data.

No data available yet.

Remediation

Vendor Solution

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see EOS User Manual: Upgrades and Downgrades https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades CVE-2024-12378 has been fixed in the following releases: * 4.33.0F and later releases in the 4.33.x train * 4.32.3M and later releases in the 4.32.x train * 4.31.7M and later releases in the 4.31.x train * 4.30.9M and later releases in the 4.30.x train * 4.29.10M and later releases in the 4.29.x train

Vendor Workaround

The workaround is to remove and re-apply security profiles for each secure VTEP. switch> show vxlan security profile VTEP Security Profile ------------- ---------------- 1.0.2.1 p1 switch> en switch# config switch(config)# interface vxlan 1 switch(config-if-Vx1)# no vxlan vtep 1.0.2.1 ip security profile p1 switch(config-if-Vx1)# vxlan vtep 1.0.2.1 ip security profile p1

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2024-54462	On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.510% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
https://www.arista.com/en/support/advisories-notices/security-advisory/21289-security-advisory-0113

History

May 8, 2025 8:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

May 8, 2025 7:15 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.
Title		On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.
Weaknesses		CWE-319
References		https://www.arista.com/en/support/advisories-notices/security-advisory/21289-security-advisory-0113
Metrics		cvssV3_1 `{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}`