CVE-2023-45142 — OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemet

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious req

01What is this vulnerability?

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent to it. HTTP header User-Agent or HTTP method for requests can be easily set by an attacker to be random and…

02Affected products

Vendor	Product	Versions
open-telemetry	opentelemetry	go-contrib — < 0.44.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-12T16:33:21.435Z
• Last modified: 2025-02-13T17:13:49.600Z

09References

• github.com — https://github.com/open-telemetry/opentelemetry-go-contrib/security/advisories/G…
• github.com — https://github.com/open-telemetry/opentelemetry-go-contrib/security/advisories/G…
• github.com — https://github.com/open-telemetry/opentelemetry-go-contrib/pull/4277
• github.com — https://github.com/advisories/GHSA-cg3q-j54f-5p7p
• github.com — https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5f7e6ad5a49b45df…
• github.com — https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.19.0
• github.com — https://github.com/open-telemetry/opentelemetry-go/blob/38e1b499c3da3107694ad266…
• github.com — https://github.com/open-telemetry/opentelemetry-go/blob/v1.12.0/semconv/internal…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/[email protected]…