PT-2025-3683 · Arista · Arista Eos

Published 2025-01-10 · Updated 2025-01-11 · CVE-2024-6437

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Arista EOS versions prior to 4.32.1F

Description The issue affects Arista EOS platforms with features like policy-based routing (PBR), BGP Flowspec, or interface traffic policy configured to redirect IP traffic to a next hop. Certain IP traffic, such as IPv4 packets with IP options, may bypass the feature's set nexthop action and be slow-path forwarded by the kernel, instead of following the redirect action's destination.

Recommendations For Arista EOS versions prior to 4.32.1F, update to a version that contains a fix for this issue to prevent IP traffic from bypassing the configured redirect actions. As a temporary workaround, consider restricting the use of features like policy-based routing (PBR), BGP Flowspec, or interface traffic policy to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2024-6437

Affected Products

Arista Eos

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2024-6437 · Security Note
• https://t.me/cvedetector/14999 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1878086408025354374 · Twitter Post
• https://twitter.com/CVEnew/status/1877815658144256324 · Twitter Post
• https://arista.com/en/support/advisories-notices/security-advisory/20689-security-advisory-0108 · Note
• https://twitter.com/WolfgangSesin/status/1878009558280372712 · Twitter Post