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Fencer Vulns
medium 6.8

CVE-2024-42488 json

Cilium agent's race condition may lead to policy bypass for Host Firewall policy

published 2024-08-15 2 y ago modified 2026-09-10 1 mo ago also BIT-cilium-2024-42488 , BIT-cilium-operator-2024-42488 , BIT-hubble-relay-2024-42488 , EUVD-2024-2630 , GHSA-q7w8-72mr-vpgw , GO-2024-3072

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.14.14 and 1.15.8, 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. This issue has been patched in Cilium v1.14.14 and v1.15.8 As the underlying issue depends on a race condition, users unable to upgrade can restart the Cilium agent on affected nodes until the affected policies are confirmed to be working as expected.

Patch / fix

  • go github.com/cilium/cilium 1.14.14, 1.15.8
  • bitnami cilium 1.16.0
  • bitnami cilium-operator 1.16.0
  • bitnami hubble-relay 1.16.0
  • cilium cilium 1.14.14, 1.15.8

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
GitHub 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
NVD 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
OSV 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/cilium/cilium
<1.14.14
>=1.15.0, <1.15.8
1.14.14
1.15.8
bitnami cilium
>=1.15.4, <1.16.0
1.16.0
bitnami cilium-operator
>=1.15.4, <1.16.0
1.16.0
bitnami hubble-relay
<1.16.0
1.16.0

Affected products

  • cilium cilium

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.