USN-4247-3 (UBUNTU-CVE-2019-15795)

Vulnerability from osv_ubuntu – Published: 2020-01-23 15:11 – Updated: 2026-04-22 07:36 – Source website
VLAI
Summary
python-apt vulnerabilities
Details

USN-4247-1 fixed several vulnerabilities in python-apt. This update provides the corresponding updates for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that python-apt would still use MD5 hashes to validate certain downloaded packages. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could potentially be used to install altered packages. (CVE-2019-15795)

It was discovered that python-apt could install packages from untrusted repositories, contrary to expectations. (CVE-2019-15796)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-15795",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-15796",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "python-apt",
            "binary_version": "0.9.3.5ubuntu3+esm2"
          },
          {
            "binary_name": "python-apt-common",
            "binary_version": "0.9.3.5ubuntu3+esm2"
          },
          {
            "binary_name": "python3-apt",
            "binary_version": "0.9.3.5ubuntu3+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "python-apt",
        "purl": "pkg:deb/ubuntu/python-apt@0.9.3.5ubuntu3+esm2?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.3.5ubuntu3+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.9.1ubuntu1",
        "0.9.0",
        "0.9.1",
        "0.9.1ubuntu1",
        "0.9.3.2",
        "0.9.3.2ubuntu2",
        "0.9.3.3",
        "0.9.3.3ubuntu1",
        "0.9.3.4",
        "0.9.3.4build1",
        "0.9.3.5",
        "0.9.3.5ubuntu1",
        "0.9.3.5ubuntu2",
        "0.9.3.5ubuntu3"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-4247-1 fixed several vulnerabilities in python-apt. This update\nprovides the corresponding updates for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that python-apt would still use MD5 hashes to validate\n certain downloaded packages. If a remote attacker were able to perform a\n machine-in-the-middle attack, this flaw could potentially be used to install\n altered packages. (CVE-2019-15795)\n\n It was discovered that python-apt could install packages from untrusted\n repositories, contrary to expectations. (CVE-2019-15796)\n",
  "id": "USN-4247-3",
  "modified": "2026-04-22T07:36:38Z",
  "published": "2020-01-23T15:11:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4247-3"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-15795"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-15796"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "python-apt vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2019-15795",
    "UBUNTU-CVE-2019-15796"
  ]
}



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