ghsa-x6ph-r535-3vjw
Vulnerability from github
Published
2025-07-18 20:03
Modified
2025-07-18 20:03
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Summary
apko is vulnerable to attack through incorrect permissions in /etc/ld.so.cache and other files
Details

It was discovered that the ld.so.cache in images generated by apko had file system permissions mode 0666: bash-5.3# find / -type f -perm -o+w /etc/ld.so.cache

This issue was introduced in commit 04f37e2 ("generate /etc/ld.so.cache (#1629)")(v0.27.0).

Impact

This potentially allows a local unprivileged user to add additional additional directories including dynamic libraries to the dynamic loader path. A user could exploit this by placing a malicious library in a directory they control.

Patches

This issue was addressed in apko in aedb077 ("fix: /etc/ld.so.cache file permissions (#1758)") (v0.29.5).

Acknowledgements

Many thanks to Cody Harris from H2O.ai for reporting this issue.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "chainguard.dev/apko"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.27.0"
            },
            {
              "fixed": "0.29.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-53945"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-18T20:03:25Z",
    "nvd_published_at": "2025-07-18T16:15:30Z",
    "severity": "HIGH"
  },
  "details": "It was discovered that the ld.so.cache in images generated by apko had file system permissions mode `0666`:\n```\nbash-5.3# find / -type f -perm -o+w\n/etc/ld.so.cache\n```\n\nThis issue was introduced in commit [04f37e2 (\"generate /etc/ld.so.cache (#1629)\")](https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9)([v0.27.0](https://github.com/chainguard-dev/apko/releases/tag/v0.27.0)).\n\n###  Impact\nThis potentially allows a local unprivileged user to add additional additional directories including dynamic libraries to the dynamic loader path. A user could exploit this by placing a malicious library in a directory they control.\n\n### Patches\nThis issue was addressed in apko in [aedb077 (\"fix: /etc/ld.so.cache file permissions (#1758)\")](https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3) ([v0.29.5](https://github.com/chainguard-dev/apko/releases/tag/v0.29.5)).\n\n### Acknowledgements\n\nMany thanks to Cody Harris from [H2O.ai](http://h2o.ai/) for reporting this issue.",
  "id": "GHSA-x6ph-r535-3vjw",
  "modified": "2025-07-18T20:03:25Z",
  "published": "2025-07-18T20:03:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/apko/security/advisories/GHSA-x6ph-r535-3vjw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53945"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chainguard-dev/apko"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/apko/releases/tag/v0.29.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "apko is vulnerable to attack through incorrect permissions in /etc/ld.so.cache and other files"
}


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