ghsa-3r9x-25h6-9v89
Vulnerability from github
Published
2022-05-24 19:01
Modified
2022-05-24 19:01
Details

A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.

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{
   affected: [],
   aliases: [
      "CVE-2021-20254",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-125",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2021-05-05T14:15:00Z",
      severity: "HIGH",
   },
   details: "A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.",
   id: "GHSA-3r9x-25h6-9v89",
   modified: "2022-05-24T19:01:24Z",
   published: "2022-05-24T19:01:24Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-20254",
      },
      {
         type: "WEB",
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=1949442",
      },
      {
         type: "WEB",
         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3EP2VJ73OVBPVSOSTVOMGIEQA3MWF6F7",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZAF6L2M6CNAJ2YYYGXPWETTW5YLCWTVT",
      },
      {
         type: "WEB",
         url: "https://security.gentoo.org/glsa/202105-22",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20210430-0001",
      },
      {
         type: "WEB",
         url: "https://www.samba.org/samba/security/CVE-2021-20254.html",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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