open-telemetry has an Observable Timing Discrepancy
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-208.
Summary
OpenTelemetry, also known as OTel, is a vendor-neutral open source Observability framework for instrumenting, generating, collecting, and exporting telemetry data such as traces, metrics, and logs. The bearertokenauth extension's server authenticator performs a simple, non-constant time string comparison of the received & configured bearer tokens. This impacts anyone using the `bearertokenauth` server authenticator. Malicious clients with network access to the collector may perform a timing attack against a collector with this authenticator to guess the configured token, by iteratively sending tokens and comparing the response time. This would allow an attacker to introduce fabricated or bad data into the collector's telemetry pipeline. The observable timing vulnerability was fixed by using constant-time comparison in 0.107.0
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| open-telemetry | opentelemetry-collector-contrib | 0.80.0 to before 0.107.0 | 0.107.0 | Patch available | CNA |
| — | github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension (Go) | 0.80.0 to before 0.107.0 | 0.107.0 | Patch available | GHSA-rfxf-mf63-cpqv |
- opentelemetry-collector-contrib Vendoropen-telemetry Affected 0.80.0 to before 0.107.0 Fixed in 0.107.0 Patch available CNA
- github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension (Go) Vendor— Affected 0.80.0 to before 0.107.0 Fixed in 0.107.0 Patch available GHSA-rfxf-mf63-cpqv
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opentelemetry:opentelemetry_collector_contrib:*:*:*:*:*:*:*:* | — | — | open-telemetry |
- cpe:2.3:a:opentelemetry:opentelemetry_collector_contrib:*:*:*:*:*:*:*:* Versions — — ·open-telemetry
Remediation
- Fix · CNA opentelemetry-collector-contrib (open-telemetry) Fixed in 0.107.0
- Fix · GHSA-rfxf-mf63-cpqv github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension (Go) Fixed in 0.107.0 Advisory →
Red Hat 1 advisory
- RHSA-2024:6274 Released 2024-09-04 · Red Hat rating ModerateRed Hat OpenShift distributed tracing 3.3.0 operator/operand containers
- Red Hat OpenShift distributed tracing 3.3 rhosdt/jaeger-agent-rhel8, rhosdt/jaeger-all-in-one-rhel8, rhosdt/jaeger-collector-rhel8 +16
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat OpenShift distributed tracing 3.3 | Fixed | RHSA-2024:6274 |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-42368
- 2026-10-03 Alias added: GHSA-rfxf-mf63-cpqv
References
Other 4
- https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-rfxf-mf63-cpqv
- https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/34516
- https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/c9bd3eff0bb357d9c812a0d8defd3b09db95699a
- https://github.com/open-telemetry/opentelemetry-collector-contrib
More open-telemetry vulnerabilities
- TI-2024-23957 OpenTelemetry Collector has a Denial of Service via Zip/Decompression Bomb sent over HTTP or gRPC CVSS 3.1HIGH 8.2
- TI-2026-42706 OpenTelemetry JavaScript: Denial of service in `JaegerPropagator` via unhandled exception on a malformed header CVSS 3.1HIGH 7.5
- TI-2026-33428 OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI CVSS 3.1HIGH 7.5
- TI-2026-33427 OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages CVSS 3.1HIGH 7.5
- TI-2026-33420 OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads CVSS 3.1HIGH 7.5
- TI-2026-32777 opentelemetry-js: Prometheus exporter process crash via malformed HTTP request CVSS 3.1HIGH 7.5
Sources
- CVE-2024-42368 · CVE Program
- CVE-2024-42368 · NVD
- FIRST EPSS
- GHSA-rfxf-mf63-cpqv · GitHub Advisory Database · CC BY 4.0
- CVE-2024-42368 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences