ghsa-843q-w84q-c7qg
Vulnerability from github
Published
2022-05-24 17:18
Modified
2024-03-21 03:33
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details

** DISPUTED ** The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances."

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{
   affected: [],
   aliases: [
      "CVE-2020-12062",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-20",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2020-06-01T16:15:00Z",
      severity: "MODERATE",
   },
   details: "** DISPUTED ** The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that \"this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol\" and \"utimes does not fail under normal circumstances.\"",
   id: "GHSA-843q-w84q-c7qg",
   modified: "2024-03-21T03:33:55Z",
   published: "2022-05-24T17:18:54Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2020-12062",
      },
      {
         type: "WEB",
         url: "https://github.com/openssh/openssh-portable/commit/955854cafca88e0cdcd3d09ca1ad4ada465364a1",
      },
      {
         type: "WEB",
         url: "https://github.com/openssh/openssh-portable/commit/aad87b88fc2536b1ea023213729aaf4eaabe1894",
      },
      {
         type: "WEB",
         url: "https://www.openssh.com/txt/release-8.3",
      },
      {
         type: "WEB",
         url: "https://www.openwall.com/lists/oss-security/2020/05/27/1",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
         type: "CVSS_V3",
      },
   ],
}


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