{
  "cveId": "CVE-2023-4256",
  "url": "https://patchblox.com/security/cve/CVE-2023-4256",
  "summary": "CVE-2023-4256 is fixed in tcpreplay on 1 platform, first by DEBIAN-CVE-2023-4256, released December 21, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "tcpreplay: Within tcpreplay\u0027s tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function...",
  "description": "Within tcpreplay\u0027s tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function within plugins/dlt_plugins.c. This vulnerability can be exploited by supplying a specifically crafted file to the tcprewrite binary. This flaw enables a local attacker to initiate a Denial of Service (DoS) attack.",
  "published": "2023-12-21T08:15:00Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00326,
  "epssPercentile": 0.25796,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.5.1-1",
      "fix": "DEBIAN-CVE-2023-4256",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-4256",
      "released": "2023-12-21T16:15:10Z"
    },
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "Debian 14",
      "fixedVersion": "4.5.1-1",
      "fix": "DEBIAN-CVE-2023-4256",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-4256",
      "released": "2023-12-21T16:15:10Z"
    },
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.2.6-1ubuntu0.1~esm5",
      "fix": "tcpreplay 4.2.6-1ubuntu0.1~esm5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tcpreplay-4.2.6-1ubuntu0.1-esm5",
      "released": "2024-03-12T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.3.2-1ubuntu0.1~esm3",
      "fix": "tcpreplay 4.3.2-1ubuntu0.1~esm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-tcpreplay-4.3.2-1ubuntu0.1-esm3",
      "released": "2024-03-12T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.3.4-1ubuntu0.1~esm2",
      "fix": "tcpreplay 4.3.4-1ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-tcpreplay-4.3.4-1ubuntu0.1-esm2",
      "released": "2024-03-12T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.4.4-1ubuntu0.1~esm1",
      "fix": "tcpreplay 4.4.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-tcpreplay-4.4.4-1ubuntu0.1-esm1",
      "released": "2024-03-12T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tcpreplay",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "4.5.2-bp160.1.1",
      "fix": "OPENSUSE-SU-2025:20119-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20119-1",
      "released": "2025-11-27T12:29:40Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}