Resource exhaustion in Linuxfoundation Opentelemetry-Go Contrib
CVE-2023-25151
opentelemetry-go-contrib is a collection of extensions for OpenTelemetry-Go. The v0.38.0 release of `go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp` uses the `httpconv.ServerRequest` function to annotate metric measurements for the `http.server.request_content_length`, `http.server.response_content_length`, and `http.server.duration` instruments. The `ServerRequest` function sets the `http.target` attribute value to be the whole request URI (including the query string)[^1]. The metric instruments do not "forget" previous measurement attributes when `cumulative` temporality is used, this means the cardinality of the measurements allocated is directly correlated with the unique URIs handled. If the query string is constantly random, this will result in a constant increase in memory allocation that can be used in a denial-of-service attack. This issue has been addressed in version 0.39.0. Users are advised to upgrade. There are no known workarounds for this issue.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.010 (58.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linuxfoundation Opentelemetry-go_contrib — versions 0.38.0
- Open-telemetry Opentelemetry-go-contrib — versions >= 0.38.0, < 0.39.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-25151?
- CVE-2023-25151 is a high-severity vulnerability in Linuxfoundation Opentelemetry-Go Contrib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-02-08.
- How severe is CVE-2023-25151?
- High severity. CVSS v3 base score is 7.5 out of 10.