GHSA-g4mq-6fp5-qwcf
Vulnerability from github
Published
2021-04-20 16:46
Modified
2024-09-06 17:42
Summary
Ansible vulnerable to Exposure of Resource to Wrong Sphere and Insecure Temporary File
Details

A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with "umask 77 && mkdir -p

"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc//cmdline'.

Show details on source website


{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ansible"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.7.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ansible"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.8.0a1"
            },
            {
              "fixed": "2.8.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ansible"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.9.0a1"
            },
            {
              "fixed": "2.9.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-1733"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362",
      "CWE-377",
      "CWE-668"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-04-05T18:50:43Z",
    "nvd_published_at": "2020-03-11T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with \"umask 77 \u0026\u0026 mkdir -p \u003cdir\u003e\"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating \u0027/proc/\u003cpid\u003e/cmdline\u0027.",
  "id": "GHSA-g4mq-6fp5-qwcf",
  "modified": "2024-09-06T17:42:34Z",
  "published": "2021-04-20T16:46:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1733"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansible/ansible/issues/67791"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansible/ansible/commit/80b9a0a25c5f75e84aefc8f2b293fb1933b154f2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansible/ansible/commit/8251d9f4c2bc82632ab992277fcd30ccbf87aa47"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansible/ansible/commit/ecf99d5e1ff732a7777010facd6c98bb0994605e"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1733"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-g4mq-6fp5-qwcf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ansible/ansible"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2020-5.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00005.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202006-11"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-4950"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Ansible vulnerable to Exposure of Resource to Wrong Sphere and Insecure Temporary File"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading...

Loading...

Loading...

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.