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  5. CVE-2024-42488

CVE-2024-42488: Policy bypass for Host Firewall policy due to race condition in Cilium agent

August 15, 2024

A race condition in the Cilium agent can cause the agent to ignore labels that should be applied to a node. This could in turn cause CiliumClusterwideNetworkPolicies intended for nodes with the ignored label to not apply, leading to policy bypass.

References

  • github.com/advisories/GHSA-q7w8-72mr-vpgw
  • github.com/cilium/cilium
  • github.com/cilium/cilium/commit/aa44dd148a9be95e07782e4f990e61678ef0abf8
  • github.com/cilium/cilium/pull/33511
  • github.com/cilium/cilium/security/advisories/GHSA-q7w8-72mr-vpgw
  • nvd.nist.gov/vuln/detail/CVE-2024-42488

Code Behaviors & Features

Detect and mitigate CVE-2024-42488 with GitLab Dependency Scanning

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Affected versions

All versions before 1.14.14, all versions starting from 1.15.0 before 1.15.8

Fixed versions

  • 1.14.14
  • 1.15.8

Solution

Upgrade to versions 1.14.14, 1.15.8 or above.

Impact 6.8 MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Source file

go/github.com/cilium/cilium/CVE-2024-42488.yml

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