usn-5179-1
Vulnerability from osv_ubuntu
Published
2021-12-07 12:44
Modified
2026-02-10 04:42
Summary
busybox vulnerabilities
Details

It was discovered that BusyBox incorrectly handled certain malformed gzip archives. If a user or automated system were tricked into processing a specially crafted gzip archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-28831)

It was discovered that BusyBox incorrectly handled certain malformed LZMA archives. If a user or automated system were tricked into processing a specially crafted LZMA archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly leak sensitive information. (CVE-2021-42374)

Vera Mens, Uri Katz, Tal Keren, Sharon Brizinov, and Shachar Menashe discovered that BusyBox incorrectly handled certain awk patterns. If a user or automated system were tricked into processing a specially crafted awk pattern, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-42378, CVE-2021-42379, CVE-2021-42380, CVE-2021-42381, CVE-2021-42382, CVE-2021-42384, CVE-2021-42385, CVE-2021-42386)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-28831",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42374",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42378",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42379",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42380",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42381",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42382",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42384",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42385",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42386",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.27.2-2ubuntu3.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:1.27.2-2ubuntu3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.22.0-19ubuntu2",
        "1:1.27.2-1ubuntu3",
        "1:1.27.2-1ubuntu4",
        "1:1.27.2-2ubuntu2",
        "1:1.27.2-2ubuntu3",
        "1:1.27.2-2ubuntu3.1",
        "1:1.27.2-2ubuntu3.2",
        "1:1.27.2-2ubuntu3.3"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-28831",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42374",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42378",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42379",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42380",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42381",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42382",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42384",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42385",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-42386",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.30.1-4ubuntu6.4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:1.30.1-4ubuntu6.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.30.1-4ubuntu4",
        "1:1.30.1-4ubuntu5",
        "1:1.30.1-4ubuntu6",
        "1:1.30.1-4ubuntu6.1",
        "1:1.30.1-4ubuntu6.2",
        "1:1.30.1-4ubuntu6.3"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that BusyBox incorrectly handled certain malformed gzip\narchives. If a user or automated system were tricked into processing a\nspecially crafted gzip archive, a remote attacker could use this issue to\ncause BusyBox to crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2021-28831)\n\nIt was discovered that BusyBox incorrectly handled certain malformed LZMA\narchives. If a user or automated system were tricked into processing a\nspecially crafted LZMA archive, a remote attacker could use this issue to\ncause BusyBox to crash, resulting in a denial of service, or possibly\nleak sensitive information. (CVE-2021-42374)\n\nVera Mens, Uri Katz, Tal Keren, Sharon Brizinov, and Shachar Menashe\ndiscovered that BusyBox incorrectly handled certain awk patterns. If a user\nor automated system were tricked into processing a specially crafted awk\npattern, a remote attacker could use this issue to cause BusyBox to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2021-42378, CVE-2021-42379, CVE-2021-42380, CVE-2021-42381,\nCVE-2021-42382, CVE-2021-42384, CVE-2021-42385, CVE-2021-42386)\n",
  "id": "USN-5179-1",
  "modified": "2026-02-10T04:42:24Z",
  "published": "2021-12-07T12:44:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5179-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-28831"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42374"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42378"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42379"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42380"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42381"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42382"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42384"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42385"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42386"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "busybox vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-28831",
    "UBUNTU-CVE-2021-42374",
    "UBUNTU-CVE-2021-42378",
    "UBUNTU-CVE-2021-42379",
    "UBUNTU-CVE-2021-42380",
    "UBUNTU-CVE-2021-42381",
    "UBUNTU-CVE-2021-42382",
    "UBUNTU-CVE-2021-42384",
    "UBUNTU-CVE-2021-42385",
    "UBUNTU-CVE-2021-42386"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.