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).

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{
   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's 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",
      },
   ],
}


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