ubuntu-cve-2026-38968
Vulnerability from osv_ubuntu
Published
2026-07-02 21:16
Modified
2026-07-09 15:18
Summary
Details

ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ntopng",
            "binary_version": "2.2+dfsg1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "ntopng-data",
            "binary_version": "2.2+dfsg1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "ntopng",
        "purl": "pkg:deb/ubuntu/ntopng@2.2+dfsg1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.1+dfsg1-2ubuntu1",
        "2.0+dfsg1-1",
        "2.2+dfsg1-1",
        "2.2+dfsg1-1build1",
        "2.2+dfsg1-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ntopng",
            "binary_version": "3.2+dfsg1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "ntopng-data",
            "binary_version": "3.2+dfsg1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "ntopng",
        "purl": "pkg:deb/ubuntu/ntopng@3.2+dfsg1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4+dfsg1-3",
        "2.4+dfsg1-4",
        "3.2+dfsg1-1",
        "3.2+dfsg1-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ntopng",
            "binary_version": "3.8+dfsg1-2.1build3"
          },
          {
            "binary_name": "ntopng-data",
            "binary_version": "3.8+dfsg1-2.1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "ntopng",
        "purl": "pkg:deb/ubuntu/ntopng@3.8+dfsg1-2.1build3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8+dfsg1-2.1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ntopng",
            "binary_version": "5.2.1+dfsg1-1"
          },
          {
            "binary_name": "ntopng-data",
            "binary_version": "5.2.1+dfsg1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "ntopng",
        "purl": "pkg:deb/ubuntu/ntopng@5.2.1+dfsg1-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.1+dfsg1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ntopng",
            "binary_version": "5.2.1+dfsg1-1ubuntu4"
          },
          {
            "binary_name": "ntopng-data",
            "binary_version": "5.2.1+dfsg1-1ubuntu4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "ntopng",
        "purl": "pkg:deb/ubuntu/ntopng@5.2.1+dfsg1-1ubuntu4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.1+dfsg1-1",
        "5.2.1+dfsg1-1ubuntu1",
        "5.2.1+dfsg1-1ubuntu3",
        "5.2.1+dfsg1-1ubuntu4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ntopng",
            "binary_version": "5.2.1+dfsg1-2ubuntu1"
          },
          {
            "binary_name": "ntopng-data",
            "binary_version": "5.2.1+dfsg1-2ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "ntopng",
        "purl": "pkg:deb/ubuntu/ntopng@5.2.1+dfsg1-2ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.1+dfsg1-2ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.",
  "id": "UBUNTU-CVE-2026-38968",
  "modified": "2026-07-09T15:18:06Z",
  "published": "2026-07-02T21:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-38968"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-38968"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ntopng/commit/14e22497233dc7d31d19dccb74b13bb073d16c2c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-38968"
  ]
}



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