GHSA-J2HP-6M75-V4J4

Vulnerability from github – Published: 2025-01-27 20:50 – Updated: 2025-01-27 20:50
VLAI?
Summary
imgproxy is vulnerable to SSRF against 0.0.0.0
Details

Summary

Imgproxy does not block the 0.0.0.0 address, even with IMGPROXY_ALLOW_LOOPBACK_SOURCE_ADDRESSES set to false. This can expose services on the local host.

Details

imgproxy protects against SSRF against a loopback address with the following check (source):

if !config.AllowLoopbackSourceAddresses && ip.IsLoopback() {
    return ErrSourceAddressNotAllowed
}

This check is insufficient to prevent accessing services on the local host, as services may receive traffic on 0.0.0.0. Go's IsLoopback (source) strictly follows the definition of loopback IPs beginning with 127. 0.0.0.0 is not blocked.

Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/imgproxy/imgproxy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.27.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-24354"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-27T20:50:21Z",
    "nvd_published_at": "2025-01-27T18:15:41Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nImgproxy does not block the `0.0.0.0` address, even with `IMGPROXY_ALLOW_LOOPBACK_SOURCE_ADDRESSES` set to false. This can expose services on the local host.\n\n### Details\n\nimgproxy protects against SSRF against a loopback address with the following check ([source](https://github.com/imgproxy/imgproxy/blob/0f37d62fd8326a32c213b30dd52e2319770885d8/security/source.go#L43C1-L47C1)):\n\n```\nif !config.AllowLoopbackSourceAddresses \u0026\u0026 ip.IsLoopback() {\n\treturn ErrSourceAddressNotAllowed\n}\n```\n\nThis check is insufficient to prevent accessing services on the local host, as services may receive traffic on `0.0.0.0`. Go\u0027s `IsLoopback` ([source](https://github.com/golang/go/blob/40b3c0e58a0ae8dec4684a009bf3806769e0fc41/src/net/ip.go#L126-L131)) strictly follows the definition of loopback IPs beginning with `127`. `0.0.0.0` is not blocked.",
  "id": "GHSA-j2hp-6m75-v4j4",
  "modified": "2025-01-27T20:50:21Z",
  "published": "2025-01-27T20:50:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/imgproxy/imgproxy/security/advisories/GHSA-j2hp-6m75-v4j4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24354"
    },
    {
      "type": "WEB",
      "url": "https://github.com/imgproxy/imgproxy/commit/3d4fed6842aa8930ec224d0ad75b0079b858e081"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/imgproxy/imgproxy"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "imgproxy is vulnerable to SSRF against 0.0.0.0"
}


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