usn-3294-1
Vulnerability from osv_ubuntu
Published
2017-05-17 17:06
Modified
2026-02-10 04:41
Summary
bash vulnerabilities
Details

Bernd Dietzel discovered that Bash incorrectly expanded the hostname when displaying the prompt. If a remote attacker were able to modify a hostname, this flaw could be exploited to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-0634)

It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543)

It was discovered that Bash incorrectly handled the popd command. A remote attacker could possibly use this issue to bypass restricted shells. (CVE-2016-9401)

It was discovered that Bash incorrectly handled path autocompletion. A local attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 17.04. (CVE-2017-5932)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-0634",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-7543",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-9401",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bash",
            "binary_version": "4.3-7ubuntu1.7"
          },
          {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-7ubuntu1.7"
          },
          {
            "binary_name": "bash-static",
            "binary_version": "4.3-7ubuntu1.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "bash",
        "purl": "pkg:deb/ubuntu/bash@4.3-7ubuntu1.7?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3-7ubuntu1.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2-5ubuntu3",
        "4.3-1ubuntu2",
        "4.3-2ubuntu1",
        "4.3-3ubuntu1",
        "4.3-4ubuntu1",
        "4.3-4ubuntu2",
        "4.3-6ubuntu1",
        "4.3-7ubuntu1",
        "4.3-7ubuntu1.1",
        "4.3-7ubuntu1.2",
        "4.3-7ubuntu1.3",
        "4.3-7ubuntu1.4",
        "4.3-7ubuntu1.5",
        "4.3-7ubuntu1.6"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-0634",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-7543",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-9401",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bash",
            "binary_version": "4.3-14ubuntu1.2"
          },
          {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-14ubuntu1.2"
          },
          {
            "binary_name": "bash-static",
            "binary_version": "4.3-14ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "bash",
        "purl": "pkg:deb/ubuntu/bash@4.3-14ubuntu1.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3-14ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3-14ubuntu1",
        "4.3-14ubuntu1.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Bernd Dietzel discovered that Bash incorrectly expanded the hostname when\ndisplaying the prompt. If a remote attacker were able to modify a hostname,\nthis flaw could be exploited to execute arbitrary code. This issue only\naffected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10.\n(CVE-2016-0634)\n\nIt was discovered that Bash incorrectly handled the SHELLOPTS and PS4\nenvironment variables. A local attacker could use this issue to execute\narbitrary code with root privileges. This issue only affected Ubuntu 14.04\nLTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543)\n\nIt was discovered that Bash incorrectly handled the popd command. A remote\nattacker could possibly use this issue to bypass restricted shells.\n(CVE-2016-9401)\n\nIt was discovered that Bash incorrectly handled path autocompletion. A\nlocal attacker could possibly use this issue to execute arbitrary code.\nThis issue only affected Ubuntu 17.04. (CVE-2017-5932)\n",
  "id": "USN-3294-1",
  "modified": "2026-02-10T04:41:08Z",
  "published": "2017-05-17T17:06:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3294-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-0634"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-7543"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-9401"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-5932"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "bash vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2016-0634",
    "UBUNTU-CVE-2016-7543",
    "UBUNTU-CVE-2016-9401",
    "UBUNTU-CVE-2017-5932"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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