ghsa-w62j-g234-3f6f
Vulnerability from github
Published
2023-02-03 06:30
Modified
2024-02-27 15:30
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details

OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be triggered by an unauthenticated attacker in the default configuration; however, the vulnerability discoverer reports that "exploiting this vulnerability will not be easy."

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{
   affected: [],
   aliases: [
      "CVE-2023-25136",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-415",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2023-02-03T06:15:00Z",
      severity: "CRITICAL",
   },
   details: "OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be triggered by an unauthenticated attacker in the default configuration; however, the vulnerability discoverer reports that \"exploiting this vulnerability will not be easy.\"",
   id: "GHSA-w62j-g234-3f6f",
   modified: "2024-02-27T15:30:30Z",
   published: "2023-02-03T06:30:23Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2023-25136",
      },
      {
         type: "WEB",
         url: "https://github.com/openssh/openssh-portable/commit/486c4dc3b83b4b67d663fb0fa62bc24138ec3946",
      },
      {
         type: "WEB",
         url: "https://bugzilla.mindrot.org/show_bug.cgi?id=3522",
      },
      {
         type: "WEB",
         url: "https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/017_sshd.patch.sig",
      },
      {
         type: "WEB",
         url: "https://jfrog.com/blog/openssh-pre-auth-double-free-cve-2023-25136-writeup-and-proof-of-concept",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGAUIXJ3TEKCRKVWFQ6GDAGQFTIIGQQP",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7LKQDFZWKYHQ65TBSH2X2HJQ4V2THS3",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JGAUIXJ3TEKCRKVWFQ6GDAGQFTIIGQQP",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7LKQDFZWKYHQ65TBSH2X2HJQ4V2THS3",
      },
      {
         type: "WEB",
         url: "https://news.ycombinator.com/item?id=34711565",
      },
      {
         type: "WEB",
         url: "https://security.gentoo.org/glsa/202307-01",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20230309-0003",
      },
      {
         type: "WEB",
         url: "https://www.openwall.com/lists/oss-security/2023/02/02/2",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2023/02/13/1",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2023/02/22/1",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2023/02/22/2",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2023/02/23/3",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2023/03/06/1",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2023/03/09/2",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
}


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