Cilium vulnerable to information leakage via insecure default Hubble UI CORS header
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.14.18, 1.15.12, 1.16.5, 1.14.19, 1.15.13, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An insecure default `Access-Control-Allow-Origin` header value could lead to sensitive data exposure for users of Cilium versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4 who deploy Hubble UI using either Cilium CLI or via the Cilium Helm chart. A user with access to a Hubble UI instance affected by this issue could leak configuration details about the Kubernetes cluster which Hubble UI is monitoring, including node names, IP addresses, and other metadata about workloads and the cluster networking configuration. In order for this vulnerability to be exploited, a victim would have to first visit a malicious page. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. As a workaround, users who deploy Hubble UI using the Cilium Helm chart directly can remove the CORS headers from the Helm template as shown in the patch from commit a3489f190ba6e87b5336ee685fb6c80b1270d06d.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- cilium cilium
From 1.14.0 · fixed in 1.14.18; From 1.15.0 · fixed in 1.15.12; From 1.16.0 · fixed in 1.16.5
- github.com/cilium/ciliumGo
From 1.14.0 · fixed in 1.14.19
- github.com/cilium/ciliumGo
From 1.15.0 · fixed in 1.15.13
- github.com/cilium/ciliumGo
From 1.16.0 · fixed in 1.16.6
- github.com/cilium/ciliumGo
From 1.14.0 · fixed in 1.14.19; From 1.15.0 · fixed in 1.15.13; From 1.16.0 · fixed in 1.16.6