kuma-dp connects to control plane without verifying TLS certificate when no CA is configured
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 2.7.26, 2.9.16, 2.11.14, 2.12.11, 2.13.7
- 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
Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7, Universal mode kuma-dp connections to an HTTPS control plane disable TLS peer verification when --ca-cert-file is not supplied and KUMA_CONTROL_PLANE_CA_CERT is unset. The dataplane authentication token is sent over the unverified connection, allowing an on-path attacker to intercept the token, impersonate the control plane, inject a forged bootstrap configuration, and take over the proxy. Standard Kubernetes installations created by kumactl install control-plane or the official Helm chart are unaffected because the mutating admission webhook injects KUMA_CONTROL_PLANE_CA_CERT into each sidecar. This issue is fixed in versions 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- kumahq kuma
fixed in 2.7.26; From 2.8.0 · fixed in 2.9.16; From 2.10.0 · fixed in 2.11.14; From 2.12.0 · fixed in 2.12.11; From 2.13.0 · fixed in 2.13.7
- github.com/kumahq/kuma/v2Go
fixed in 2.7.26
- github.com/kumahq/kuma/v2Go
From 2.8.0 · fixed in 2.9.16
- github.com/kumahq/kuma/v2Go
From 2.10.0 · fixed in 2.11.14
- github.com/kumahq/kuma/v2Go
From 2.12.0 · fixed in 2.12.11
- github.com/kumahq/kuma/v2Go
From 2.13.0 · fixed in 2.13.7
- github.com/kumahq/kumaGo
through 1.8.1
- github.com/kumahq/kumaGo
All versions
- github.com/kumahq/kuma/v2Go
fixed in 2.7.26; From 2.9.13 · fixed in 2.11.14; From 2.12.4 · fixed in 2.12.11; From 2.13.0 · fixed in 2.13.7