fkie_cve-2018-20482
Vulnerability from fkie_nvd
Published
2018-12-26 18:29
Modified
2024-11-21 04:01
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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).
References
cve@mitre.orghttp://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454Patch, Third Party Advisory
cve@mitre.orghttp://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.htmlThird Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/106354Third Party Advisory, VDB Entry
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2018/12/msg00023.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/11/msg00025.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://news.ycombinator.com/item?id=18745431Exploit, Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/201903-05Third Party Advisory
cve@mitre.orghttps://twitter.com/thatcks/status/1076166645708668928Patch, Third Party Advisory
cve@mitre.orghttps://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBugPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106354Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/12/msg00023.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/11/msg00025.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://news.ycombinator.com/item?id=18745431Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201903-05Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://twitter.com/thatcks/status/1076166645708668928Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBugPatch, Third Party Advisory
Impacted products
Vendor Product Version
gnu tar *
debian debian_linux 8.0
debian debian_linux 9.0
opensuse leap 15.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "568B865E-7BA0-45A1-A944-575D49BC289E",
                     versionEndIncluding: "1.30",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "DEECE5FC-CACF-4496-A3E7-164736409252",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "F1E78106-58E6-4D59-990F-75DA575BFAD9",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "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).",
      },
      {
         lang: "es",
         value: "GNU Tar, hasta la versión 1.30, cuando se emplea --sparse, gestiona de manera incorrecta el encogimiento de archivos durante el acceso de lectura, lo que permite que usuarios locales provoquen una denegación de servicio (bucle infinito de lectura en sparse_dump_region en sparse.c) modificando un archivo que debería ser archivado por el proceso de un usuario diferente (por ejemplo, un backup del sistema que se ejecuta como root).",
      },
   ],
   id: "CVE-2018-20482",
   lastModified: "2024-11-21T04:01:34.323",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "LOW",
            cvssData: {
               accessComplexity: "MEDIUM",
               accessVector: "LOCAL",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 1.9,
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               vectorString: "AV:L/AC:M/Au:N/C:N/I:N/A:P",
               version: "2.0",
            },
            exploitabilityScore: 3.4,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 4.7,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2018-12-26T18:29:00.373",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
            "Patch",
            "Third Party Advisory",
         ],
         url: "http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454",
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      {
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      },
      {
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         ],
         url: "http://www.securityfocus.com/bid/106354",
      },
      {
         source: "cve@mitre.org",
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         ],
         url: "https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html",
      },
      {
         source: "cve@mitre.org",
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         source: "cve@mitre.org",
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         url: "https://news.ycombinator.com/item?id=18745431",
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         url: "https://security.gentoo.org/glsa/201903-05",
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      {
         source: "cve@mitre.org",
         tags: [
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         url: "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug",
      },
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      {
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      },
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         tags: [
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         url: "https://news.ycombinator.com/item?id=18745431",
      },
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         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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         url: "https://security.gentoo.org/glsa/201903-05",
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         url: "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug",
      },
   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-835",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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