usn-7015-7
Vulnerability from osv_ubuntu
Published
2025-09-29 12:07
Modified
2026-06-25 10:46
Summary
python2.7 regression
Details

USN-7015-4 fixed vulnerabilities in Python. It was discovered that the fix for CVE-2023-27043 for python2.7 was incorrectly applied on Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that the Python email module incorrectly parsed email addresses that contain special characters. A remote attacker could possibly use this issue to bypass certain protection mechanisms. (CVE-2023-27043)

It was discovered that Python allowed excessive backtracking while parsing certain tarfile headers. A remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of service. (CVE-2024-6232)

It was discovered that the Python email module incorrectly quoted newlines for email headers. A remote attacker could possibly use this issue to perform header injection. (CVE-2024-6923)

It was discovered that the Python http.cookies module incorrectly handled parsing cookies that contained backslashes for quoted characters. A remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of service. (CVE-2024-7592)

It was discovered that the Python zipfile module incorrectly handled certain malformed zip files. A remote attacker could possibly use this issue to cause Python to stop responding, resulting in a denial of service. (CVE-2024-8088)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-27043",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "idle-python2.7",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "libpython2.7",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "libpython2.7-minimal",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "libpython2.7-stdlib",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "libpython2.7-testsuite",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "python2.7",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "python2.7-examples",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          },
          {
            "binary_name": "python2.7-minimal",
            "binary_version": "2.7.12-1ubuntu0~16.04.18+esm18"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "python2.7",
        "purl": "pkg:deb/ubuntu/python2.7@2.7.12-1ubuntu0~16.04.18+esm18?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.7.12-1ubuntu0~16.04.18+esm18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.10-4ubuntu1",
        "2.7.10-4ubuntu2",
        "2.7.11-2",
        "2.7.11-3",
        "2.7.11-4",
        "2.7.11-6",
        "2.7.11-7",
        "2.7.11-7ubuntu1",
        "2.7.12-1~16.04",
        "2.7.12-1ubuntu0~16.04.1",
        "2.7.12-1ubuntu0~16.04.2",
        "2.7.12-1ubuntu0~16.04.3",
        "2.7.12-1ubuntu0~16.04.4",
        "2.7.12-1ubuntu0~16.04.8",
        "2.7.12-1ubuntu0~16.04.9",
        "2.7.12-1ubuntu0~16.04.11",
        "2.7.12-1ubuntu0~16.04.12",
        "2.7.12-1ubuntu0~16.04.13",
        "2.7.12-1ubuntu0~16.04.14",
        "2.7.12-1ubuntu0~16.04.16",
        "2.7.12-1ubuntu0~16.04.18",
        "2.7.12-1ubuntu0~16.04.18+esm1",
        "2.7.12-1ubuntu0~16.04.18+esm2",
        "2.7.12-1ubuntu0~16.04.18+esm3",
        "2.7.12-1ubuntu0~16.04.18+esm4",
        "2.7.12-1ubuntu0~16.04.18+esm5",
        "2.7.12-1ubuntu0~16.04.18+esm6",
        "2.7.12-1ubuntu0~16.04.18+esm7",
        "2.7.12-1ubuntu0~16.04.18+esm8",
        "2.7.12-1ubuntu0~16.04.18+esm9",
        "2.7.12-1ubuntu0~16.04.18+esm10",
        "2.7.12-1ubuntu0~16.04.18+esm11",
        "2.7.12-1ubuntu0~16.04.18+esm12",
        "2.7.12-1ubuntu0~16.04.18+esm13",
        "2.7.12-1ubuntu0~16.04.18+esm15",
        "2.7.12-1ubuntu0~16.04.18+esm16",
        "2.7.12-1ubuntu0~16.04.18+esm17"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-27043",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "idle-python2.7",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "libpython2.7",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "libpython2.7-minimal",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "libpython2.7-stdlib",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "libpython2.7-testsuite",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "python2.7",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "python2.7-examples",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          },
          {
            "binary_name": "python2.7-minimal",
            "binary_version": "2.7.17-1~18.04ubuntu1.13+esm13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "python2.7",
        "purl": "pkg:deb/ubuntu/python2.7@2.7.17-1~18.04ubuntu1.13+esm13?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.7.17-1~18.04ubuntu1.13+esm13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.14-2ubuntu2",
        "2.7.14-4",
        "2.7.14-6",
        "2.7.14-7",
        "2.7.14-8",
        "2.7.15~rc1-1",
        "2.7.15~rc1-1ubuntu0.1",
        "2.7.15-4ubuntu4~18.04",
        "2.7.15-4ubuntu4~18.04.1",
        "2.7.15-4ubuntu4~18.04.2",
        "2.7.17-1~18.04",
        "2.7.17-1~18.04ubuntu1",
        "2.7.17-1~18.04ubuntu1.1",
        "2.7.17-1~18.04ubuntu1.2",
        "2.7.17-1~18.04ubuntu1.3",
        "2.7.17-1~18.04ubuntu1.5",
        "2.7.17-1~18.04ubuntu1.6",
        "2.7.17-1~18.04ubuntu1.7",
        "2.7.17-1~18.04ubuntu1.8",
        "2.7.17-1~18.04ubuntu1.10",
        "2.7.17-1~18.04ubuntu1.11",
        "2.7.17-1~18.04ubuntu1.13",
        "2.7.17-1~18.04ubuntu1.13+esm1",
        "2.7.17-1~18.04ubuntu1.13+esm2",
        "2.7.17-1~18.04ubuntu1.13+esm3",
        "2.7.17-1~18.04ubuntu1.13+esm4",
        "2.7.17-1~18.04ubuntu1.13+esm5",
        "2.7.17-1~18.04ubuntu1.13+esm6",
        "2.7.17-1~18.04ubuntu1.13+esm7",
        "2.7.17-1~18.04ubuntu1.13+esm8",
        "2.7.17-1~18.04ubuntu1.13+esm10",
        "2.7.17-1~18.04ubuntu1.13+esm11",
        "2.7.17-1~18.04ubuntu1.13+esm12"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-7015-4 fixed vulnerabilities in Python. It was discovered that the fix\nfor CVE-2023-27043 for python2.7 was incorrectly applied on Ubuntu 16.04\nLTS and Ubuntu 18.04 LTS. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that the Python email module incorrectly parsed email\n addresses that contain special characters. A remote attacker could\n possibly use this issue to bypass certain protection mechanisms.\n (CVE-2023-27043)\n\n It was discovered that Python allowed excessive backtracking while parsing\n certain tarfile headers. A remote attacker could possibly use this issue\n to cause Python to consume resources, leading to a denial of service.\n (CVE-2024-6232)\n\n It was discovered that the Python email module incorrectly quoted newlines\n for email headers. A remote attacker could possibly use this issue to\n perform header injection. (CVE-2024-6923)\n\n It was discovered that the Python http.cookies module incorrectly handled\n parsing cookies that contained backslashes for quoted characters. A remote\n attacker could possibly use this issue to cause Python to consume\n resources, leading to a denial of service. (CVE-2024-7592)\n\n It was discovered that the Python zipfile module incorrectly handled\n certain malformed zip files. A remote attacker could possibly use this\n issue to cause Python to stop responding, resulting in a denial of\n service. (CVE-2024-8088)\n",
  "id": "USN-7015-7",
  "modified": "2026-06-25T10:46:30Z",
  "published": "2025-09-29T12:07:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7015-7"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-27043"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/2125702"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "python2.7 regression",
  "upstream": [
    "UBUNTU-CVE-2023-27043"
  ]
}



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