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GHSA-68mj-9pjq-mc85 BIT-cilium-2024-28248 BIT-cilium-operator-2024-28248 BIT-cilium-proxy-2024-28248 BIT-hubble-2024-28248 BIT-hubble-relay-2024-28248 BIT-hubble-ui-2024-28248 BIT-hubble-ui-backend-2024-28248 CVE-2024-28248 GO-2024-2653

Intermittent HTTP policy bypass

High Go
Severity
7.2 / 10
High · CVSS 3.1
Exploit chance (EPSS)
0.62%
Chance of exploitation in the next 30 days. Higher than 49.71% of scored vulnerabilities.
Known exploited
No
Not in CISA's catalog
Weakness
CWE-693 Protection Mechanism Failure
Fix
1.13.13
Upgrade github.com/cilium/cilium to this version or later

Description

Impact

Cilium's HTTP policies are not consistently applied to all traffic in the scope of the policies, leading to HTTP traffic being incorrectly and intermittently forwarded when it should be dropped.

Patches

This issue affects:

  • Cilium v1.13 between v1.13.9 and v1.13.12 inclusive
  • Cilium v1.14 between v1.14.0 and v1.14.7 inclusive
  • Cilium v1.15.0 and v1.15.1

This issue has been patched in:

  • Cilium v1.15.2
  • Cilium v1.14.8
  • Cilium v1.13.13

Workarounds

There is no workaround for this issue – affected users are strongly encouraged to upgrade.

Acknowledgements

The Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @romikps for discovering and reporting this issue, and @sayboras and @jrajahalme for preparing the fix.

For more information

If you have any questions or comments about this advisory, please reach out on Slack.

If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at security@cilium.io. This is a private mailing list for the Cilium internal security team, and your report will be treated as top priority.

Affected versions

Go

PackageVulnerableFixed in
github.com/cilium/cilium
>= 1.13.9, < 1.13.13
1.13.13
github.com/cilium/cilium
>= 1.14.0, < 1.14.8
1.14.8
github.com/cilium/cilium
>= 1.15.0, < 1.15.2
1.15.2
github.com/cilium/cilium
>= 1.13.9, < 1.13.13
>= 1.14.0, < 1.14.8
>= 1.15.0, < 1.15.2
1.13.13
1.14.8
1.15.2

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

github.com/cilium/cilium Go → 1.13.13

go
go get github.com/cilium/cilium@v1.13.13 && go mod tidy

Severity breakdown

CVSS 3.1 7.2

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

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Weakness

CWE-693: Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

References

Advisories

Packages

Other links

Timeline

  1. Published
  2. Last updated by the source
  3. Latest EPSS score
AdvisorySeverityWhy it's related
GHSA-fm8w-2m5w-9j7r
Cilium may unexpectedly allow ingress traffic from the local namespace when a Kubernetes NetworkPolicy is configured with an ipBlock match
Medium Also affects github.com/cilium/cilium
GHSA-w7c2-w76w-5hmj
Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces
High Also affects github.com/cilium/cilium
GHSA-q6h5-q3q6-f87x
CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation
Medium Also affects github.com/cilium/cilium
GHSA-3fcv-jvfp-m4q9
Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access
High Also affects github.com/cilium/cilium
GHSA-gj49-89wh-h4gj
Cillium exposes sensitive information included in the cilium-bugtool debug archive
Medium Also affects github.com/cilium/cilium
GHSA-hxv8-4j4r-cqgv
Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same-node traffic
Medium Also affects github.com/cilium/cilium
GHSA-5r23-prx4-mqg3
Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled
Medium Also affects github.com/cilium/cilium
GHSA-38pp-6gcp-rqvm
Cilium with misconfigured toGroups in policies can lead to unrestricted egress traffic
Medium Also affects github.com/cilium/cilium

Credits: @jrajahalme, @romikps, @sayboras

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