ghsa-9mc5-7qhg-fp3w
Vulnerability from github
Published
2025-03-11 21:12
Modified
2025-03-21 21:51
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Below has Incorrect Permission Assignment for Critical Resource
Details

Impact

A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.

Patches

https://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83

This is included in version 0.9.0

Workarounds

Change the permission on /var/log/below manually

References

https://www.facebook.com/security/advisories/cve-2025-27591 https://www.cve.org/CVERecord?id=CVE-2025-27591

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "below"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-27591"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-732"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-11T21:12:54Z",
    "nvd_published_at": "2025-03-11T19:15:43Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nA privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.\n\n### Patches\nhttps://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83\n\nThis is included in version 0.9.0\n\n### Workarounds\nChange the permission on `/var/log/below` manually\n\n### References\nhttps://www.facebook.com/security/advisories/cve-2025-27591\nhttps://www.cve.org/CVERecord?id=CVE-2025-27591",
  "id": "GHSA-9mc5-7qhg-fp3w",
  "modified": "2025-03-21T21:51:07Z",
  "published": "2025-03-11T21:12:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/facebookincubator/below/security/advisories/GHSA-9mc5-7qhg-fp3w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27591"
    },
    {
      "type": "WEB",
      "url": "https://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83"
    },
    {
      "type": "WEB",
      "url": "https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/facebookincubator/below"
    },
    {
      "type": "WEB",
      "url": "https://www.facebook.com/security/advisories/cve-2025-27591"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/03/12/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Below has Incorrect Permission Assignment for Critical Resource"
}


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