ghsa-pm5x-48pq-67cq
Vulnerability from github
Published
2022-05-13 01:04
Modified
2022-05-13 01:04
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2018-20482"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-12-26T18:29:00Z",
    "severity": "MODERATE"
  },
  "details": "GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user\u0027s process (e.g., a system backup running as root).",
  "id": "GHSA-pm5x-48pq-67cq",
  "modified": "2022-05-13T01:04:46Z",
  "published": "2022-05-13T01:04:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20482"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html"
    },
    {
      "type": "WEB",
      "url": "https://news.ycombinator.com/item?id=18745431"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201903-05"
    },
    {
      "type": "WEB",
      "url": "https://twitter.com/thatcks/status/1076166645708668928"
    },
    {
      "type": "WEB",
      "url": "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug"
    },
    {
      "type": "WEB",
      "url": "http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454"
    },
    {
      "type": "WEB",
      "url": "http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/106354"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.