ubuntu-cve-2019-3881
Vulnerability from osv_ubuntu
Published
2020-09-04 12:15
Modified
2025-07-16 04:54
Summary
Details

Bundler prior to 2.1.0 uses a predictable path in /tmp/, created with insecure permissions as a storage location for gems, if locations under the user's home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "bundler",
            "binary_version": "1.16.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "ruby-bundler",
            "binary_version": "1.16.1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "bundler",
        "purl": "pkg:deb/ubuntu/bundler@1.16.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.16.1-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.15.1-1",
        "1.16.1-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Bundler prior to 2.1.0 uses a predictable path in /tmp/, created with insecure permissions as a storage location for gems, if locations under the user\u0027s home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed.",
  "id": "UBUNTU-CVE-2019-3881",
  "modified": "2025-07-16T04:54:21Z",
  "published": "2020-09-04T12:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3881"
    },
    {
      "type": "REPORT",
      "url": "https://salsa.debian.org/ruby-team/bundler/blob/debian/1.16.1-2/debian/patches/0006-Don-t-use-insecure-temporary-directory-as-home-direc.patch"
    },
    {
      "type": "REPORT",
      "url": "https://salsa.debian.org/ruby-team/bundler/blob/debian/1.16.1-2/debian/patches/0007-Remove-temporary-home-directories.patch"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4870-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-3881"
    }
  ],
  "related": [
    "USN-4870-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-3881"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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