GHSA-5R5M-65GX-7VRH

Vulnerability from github – Published: 2023-02-08 22:32 – Updated: 2023-06-13 23:47
VLAI?
Summary
otelhttp and otelbeego have DoS vulnerability for high cardinality metrics
Details

Impact

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.

Pseudo-attack:

for infinite loop {
  r := generate_random_string()
  do_http_request("/some/path?random="+r)
}

Patches

  • go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp - v0.39.0
  • go.opentelemetry.io/contrib/instrumentation/github.com/astaxie/beego/otelbeego - v0.39.0
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.38.0"
            },
            {
              "fixed": "0.39.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "go.opentelemetry.io/contrib/instrumentation/github.com/astaxie/beego/otelbeego"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.38.0"
            },
            {
              "fixed": "0.39.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-25151"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-02-08T22:32:16Z",
    "nvd_published_at": "2023-02-08T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nThe [v0.38.0](https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.13.0) release of [`go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp`](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/463c2e7cd69d25f40b0a595b05394eeb26c68ae2/instrumentation/net/http/otelhttp/handler.go#L218) uses the [`httpconv.ServerRequest`](https://github.com/open-telemetry/opentelemetry-go/blob/v1.12.0/semconv/internal/v2/http.go#L159) function to annotate metric measurements for the `http.server.request_content_length`, `http.server.response_content_length`, and `http.server.duration` instruments.\n\nThe `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.\n\nPseudo-attack:\n```\nfor infinite loop {\n  r := generate_random_string()\n  do_http_request(\"/some/path?random=\"+r)\n}\n```\n\n### Patches\n- `go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp` - v0.39.0\n- `go.opentelemetry.io/contrib/instrumentation/github.com/astaxie/beego/otelbeego` - v0.39.0\n\n[^1]: https://github.com/open-telemetry/opentelemetry-go/blob/6cb5718eaaed5c408c3bf4ad1aecee5c20ccdaa9/semconv/internal/v2/http.go#L202-L208",
  "id": "GHSA-5r5m-65gx-7vrh",
  "modified": "2023-06-13T23:47:42Z",
  "published": "2023-02-08T22:32:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-go-contrib/security/advisories/GHSA-5r5m-65gx-7vrh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25151"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/open-telemetry/opentelemetry-go-contrib"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-go/blob/v1.12.0/semconv/internal/v2/http.go#L159"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "otelhttp and otelbeego have DoS vulnerability for high cardinality metrics"
}


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