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."

Show details on source website

To clipboard 

{
  "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"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.