Debug mode leaks confidential data in Cilium
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-532.
Summary
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. When run in debug mode, Cilium will log the contents of the `cilium-secrets` namespace. This could include data such as TLS private keys for Ingress and GatewayAPI resources. An attacker with access to debug output from the Cilium containers could use the resulting output to intercept and modify traffic to and from the affected cluster. Output of the sensitive information would occur at Cilium agent restart, when secrets in the namespace are modified, and on creation of Ingress or GatewayAPI resources. This vulnerability is fixed in Cilium releases 1.11.16, 1.12.9, and 1.13.2. Users unable to upgrade should disable debug mode.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| cilium | cilium | 1.7 to before 1.11.16; 1.12.0 to before 1.12.9; 1.13.0 to before 1.13.2 | 1.11.16, 1.12.9, 1.13.2 | Patch available | CNA |
| — | github.com/cilium/cilium (Go) | 1.7.0 – 1.10.0 | — | No fix listed | GHSA-pg5p-wwp8-97g8 |
| — | github.com/cilium/cilium (Go) | 1.11.0 to before 1.11.16 | 1.11.16 | Patch available | GHSA-pg5p-wwp8-97g8 |
| — | github.com/cilium/cilium (Go) | 1.12.0 to before 1.12.9 | 1.12.9 | Patch available | GHSA-pg5p-wwp8-97g8 |
| — | github.com/cilium/cilium (Go) | 1.13.0 to before 1.13.2 | 1.13.2 | Patch available | GHSA-pg5p-wwp8-97g8 |
- cilium Vendorcilium Affected 1.7 to before 1.11.16; 1.12.0 to before 1.12.9; 1.13.0 to before 1.13.2 Fixed in 1.11.16, 1.12.9, 1.13.2 Patch available CNA
- github.com/cilium/cilium (Go) Vendor— Affected 1.7.0 – 1.10.0 Fixed in — No fix listed GHSA-pg5p-wwp8-97g8
- github.com/cilium/cilium (Go) Vendor— Affected 1.11.0 to before 1.11.16 Fixed in 1.11.16 Patch available GHSA-pg5p-wwp8-97g8
- github.com/cilium/cilium (Go) Vendor— Affected 1.12.0 to before 1.12.9 Fixed in 1.12.9 Patch available GHSA-pg5p-wwp8-97g8
- github.com/cilium/cilium (Go) Vendor— Affected 1.13.0 to before 1.13.2 Fixed in 1.13.2 Patch available GHSA-pg5p-wwp8-97g8
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* | 1.7.0 to before 1.11.16; 1.12.0 to before 1.12.9; 1.13.0 to before 1.13.2 | Vulnerable | cilium |
- cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* Versions 1.7.0 to before 1.11.16; 1.12.0 to before 1.12.9; 1.13.0 to before 1.13.2 Vulnerable ·cilium
Remediation
- Fix · CNA cilium (cilium) Fixed in 1.11.16, 1.12.9, 1.13.2
- Fix · GHSA-pg5p-wwp8-97g8 github.com/cilium/cilium (Go) Fixed in 1.11.16 Advisory →
- Fix · GHSA-pg5p-wwp8-97g8 github.com/cilium/cilium (Go) Fixed in 1.12.9 Advisory →
- Fix · GHSA-pg5p-wwp8-97g8 github.com/cilium/cilium (Go) Fixed in 1.13.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-29002
- 2026-10-03 Alias added: GHSA-pg5p-wwp8-97g8
References
More Cilium vulnerabilities
- TI-2024-32092 CIDR deny policies may not take effect when a more narrow CIDR allow is present CVSS 3.1HIGH 8.7
- TI-2023-12305 Cilium eBPF filters may be temporarily removed during agent restart CVSS 3.1CRITICAL 9.8
- TI-2023-20486 Cilium NetworkPolicy bypass via pod labels CVSS 3.1CRITICAL 9.0
- TI-2022-11721 Incorrect Default Permissions in Cilium CVSS 3.1HIGH 8.8
- TI-2026-36600 Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access CVSS 3.1CRITICAL 9.2
- TI-2026-40915 Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces CVSS 3.1HIGH 8.9
Sources
- CVE-2023-29002 · CVE Program
- CVE-2023-29002 · NVD
- FIRST EPSS
- GHSA-pg5p-wwp8-97g8 · GitHub Advisory Database · CC BY 4.0
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